Japan Atomic Energy Agency

2005.10 - 2006.8

日本原子力研究所 関西研究所   放射光科学研究センター   博士研究員

2004.4 - 2005.9

The microscopic transition process from high-density to low-density amorphous state of SnI4 Reviewed

Kazuhiro Fuchizaki, Ayako Ohmura, Hiroki Naruta, Takuya Nishioka

Journal of Physics: Condensed Matter   33   365401   2021.7

Cluster glass transition and relaxation in the random spinel CoGa2O4 Reviewed

T. Naka, T. Nakane, S. Ishii, M. Nakayama, A. Ohmura, F. Ishikawa, A. de Visser, H. Abe, T. Uchikoshi

Physical Review B   103 ( 22 )   224408   2021.6

Do SnI4 molecules deform on heating and pressurization in the low-pressure crystalline phase? Reviewed

Hiroki Naruta, Kazuhiro Fuchizaki, Daisuke Wakabayashi, Akio Suzuki, Ayako Ohmura, Hiroyuki Saitoh

Journal of Physics: Condensed Matter   32 ( 5 )   055401 - 055401   2020.1

Superconductivity under pressure in the Dirac semimetal PdTe2 Reviewed

H Leng, A Ohmura, L N Anh, F Ishikawa, T Naka, Y K Huang, A de Visser

Journal of Physics: Condensed Matter   32 ( 2 )   025603 - 025603   2020.1

Transport and structural properties of Cu0.25Bi2(TexSe1-x)3 (x = 0.01) under high pressure Reviewed

Ayako Ohmura, Masako Matsuzawa, Fumihiro Ishikawa, Yusuke Suzuki, Masashi Komatsu, Shumpei Osuga, Satoshi Nakano, Atsuko Nakayama, Yuh Yamada, Takanari Kashiwagi, Kazuo Kadowaki

Japanese Journal of Applied Physics   56 ( 5 )   2017.5

Pressure-induced topological phase transition in the polar semiconductor BiTeBr Reviewed

Ayako Ohmura, Yuichiro Higuchi, Takayuki Ochiai, Manabu Kanou, Fumihiro Ishikawa, Satoshi Nakano, Atsuko Nakayama, Yuh Yamada, Takao Sasagawa

PHYSICAL REVIEW B   95 ( 12 )   2017.3

21aPS-30 Pressure dependence of transport properties of K(Fe_<1-x>Co_x)_2As_2

Yamagishi T., Ishikawa F., Okaji R., Ishii A., Nakayama A., Ohmura A., Yamada Yuh

Meeting Abstracts of the Physical Society of Japan   71   2227 - 2227   2016

21aPS-38 Single-crystal growth of Pr_2Ba_4Cu_7O_<15-δ> under oxygen pressure

Inaba K., Ishikawa F., Hoshito S., Sato C., Iwata N., Sumi Y., Nakayama A., Ohmura A., Yamada Yuh

Meeting Abstracts of the Physical Society of Japan   71   2233 - 2233   2016

19pBG-8 Search for post-graphite phase under high pressure at room temperature

Sato Takaaki, Nakayama Atsuko, Taniguchi Takashi, Yamada Yuh, Ishikawa Fumihiro, Ohmura Ayako

Meeting Abstracts of the Physical Society of Japan   71   1850 - 1850   2016

Counting graphene layers based on the light-shielding effect of Raman scattering from a substrate Reviewed

Atsuko Nakayama, Suguru Hoshino, Yuh Yamada, Ayako Ohmura, Fumihiro Ishikawa

APPLIED PHYSICS LETTERS   107 ( 23 )   2015.12

Collapse of CuO Double Chains and Suppression of Superconductivity in High-Pressure Phase of YBa2Cu4O8 Reviewed

Atsuko Nakayama, Yusuke Onda, Shuhei Yamada, Hiroshi Fujihisa, Masafumi Sakata, Yuki Nakamoto, Katsuya Shimizu, Satoshi Nakano, Ayako Ohmura, Fumihiro Ishikawa, Yuh Yamada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 9 )   2014.9

Pressure-induced superconductivity in non-stoichiometric bismuth telluride Bi35Te65 Reviewed

M. Einaga, A. Ohmura, F. Ishikawa, A. Nakayama, Yuh Yamada, S. Nakano, A. Matsushita, K. Shimizu

Journal of Physics: Conference Series   500 ( 19 )   192003 - 192003   2014.5

Synthesis of New Layered Oxypnictides Sr2CrO2(FeAs)(2) Reviewed

Naoya Eguchi, Fumihiro Ishikawa, Michihiro Kodama, Takeshi Wakabayashi, Atsuko Nakayama, Ayako Ohmura, Yuh Yamada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   82 ( 4 )   2013.4

Report on the 24^th Biennial International Conference of the International Association for the Advancement of High Pressure Science and Technology (AIRAPT) (I)

OHMURA Ayako

The Review of High Pressure Science and Technology   23 ( 4 )   354 - 355   2013

Powder x-ray diffraction of BaFe2As2under hydrostatic pressure Reviewed

N Eguchi, M Kodama, F Ishikawa, A Nakayama, A Ohmura, Yuh Yamada, S Nakano

Journal of Physics: Conference Series   400 ( 2 )   022017 - 022017   2012.12

Pressure-induced superconductivity in Bi0.85Sb0.15 alloy Reviewed

A. Ohmura, A. Yamamura, M. Einaga, F. Ishikawa, A. Nakayama, Yuh Yamada, S. Nakano

Journal of Physics: Conference Series   400 ( PART 2 )   2012.1

Pressure effect on critical temperature for superconductivity and lattice parameters of AlB2-type ternary silicide YbGa1.1Si0.9 Reviewed

Ayako Ohmura, Koji Fujimaki, Fumihiro Ishikawa, Yuh Yamada, Naohito Tsujii, Motoharu Imai

PHYSICAL REVIEW B   84 ( 10 )   2011.9

High-pressure study of ScH3: Raman, infrared, and visible absorption spectroscopy Reviewed

Tetsuji Kume, Hiroyuki Ohura, Tomoo Takeichi, Ayako Ohmura, Akihiko Machida, Tetsu Watanuki, Katsutoshi Aoki, Shigeo Sasaki, Hiroyasu Shimizu, Kenichi Takemura

PHYSICAL REVIEW B   84 ( 6 )   2011.8

Pressure-induced phase transition of Bi2Te3 to a bcc structure Reviewed

Einaga Mari, Ohmura Ayako, Nakayama Atsuko, Ishikawa Fumihiro, Yamada Yuh, Nakano Satoshi

PHYSICAL REVIEW B   83 ( 9 )   2011.3

Site dependent hardening of the lanthanum metal lattice by hydrogen absorption Reviewed

A. Machida, T. Watanuki, A. Ohmura, T. Ikeda, K. Aoki, S. Nakano, K. Takemura

SOLID STATE COMMUNICATIONS   151 ( 5 )   341 - 345   2011.3

Pressure-induced phase transition, metallization, and superconductivity in boron triiodide Reviewed

Nozomu Hamaya, Miyuki Ishizuka, Suzue Onoda, Jiang Guishan, Ayako Ohmura, Katsuya Shimizu

Physical Review B - Condensed Matter and Materials Physics   82 ( 9 )   2010.9

Powder x-ray diffraction study of Ne up to 240 GPa Reviewed

K. Takemura, T. Watanuki, K. Ohwada, A. MacHida, A. Ohmura, A. Ohmura, K. Aoki

Journal of Physics: Conference Series   215   2010.5

New superconducting phase of Bi2Te3under pressure above 11 GPa Reviewed

M. Einaga, Y. Tanabe, A. Nakayama, A. Ohmura, F. Ishikawa, Yuh Yamada

Journal of Physics: Conference Series   215   012036 - 012036   2010.3

High pressure raman and visible absorption study of AlH<SUB>3</SUB> Reviewed

N. Shimura, T. Takeichi, T. Kume, S. Sasaki, H. Shimizu, A. Ohmura, K. Ikeda, Y. Nakamori, S. Orimo

Journal of Physics: Conference Series   215 ( 1 )   012047-1 - 012047-4   2010.3

Photocatalytic activities of Ba2RBiO6 (R = La, Ce, Nd, Sm, Eu, Gd, Dy) under visible light irradiation Reviewed

Takuya Hatakeyama, Shingo Takeda, Fumihiro Ishikawa, Ayako Ohmura, Atsuko Nakayama, Yuh Yamada, Akiyuki Matsushita, Jinhua Yea

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   118 ( 1374 )   91 - 95   2010.2

Pressure dependence of superconducting-transition temperature of YbGa1.1Si0.9

A. Ohmura, K. Fujimaki, M. Einaga, F. Ishikawa, A. Nakayama, Yuh Yamada, M. Imai, N. Tsujii

Journal of Physics: Conference Series   215   012035   2010

Structure of pressure-induced amorphous form of SnI4 at high pressure Reviewed

Ayako Ohmura, Kyoko Sato, Nozomu Hamaya, Maiko Isshiki, Yasuo Ohishi

Physical Review B - Condensed Matter and Materials Physics   80 ( 5 )   2009.8

Structure of pressure-induced amorphous form of SnI4 at high pressure Reviewed

Ayako Ohmura, Kyoko Sato, Nozomu Hamaya, Maiko Isshiki, Yasuo Ohishi

PHYSICAL REVIEW B   80 ( 5 )   2009.8

Zero-resistance superconducting phase in BaFe2As2 under high pressure Reviewed

Fumihiro Ishikawa, Naoya Eguchi, Michihiro Kodama, Koji Fujimaki, Mari Einaga, Ayako Ohmura, Atsuko Nakayama, Akihiro Mitsuda, Yuh Yamada

PHYSICAL REVIEW B   79 ( 17 )   2009.5

Raman and optical absorption studies of rare-earth hydrides under high pressure Reviewed

T. Kume, H. Ohura, T. Takeichi, S. Sasaki, H. Shimizu, A. Ohmura, A. Machida, T. Watanuki, K. Aoki, K. Takemura

Journal of Physics: Conference Series   121   2008.12

Photochromism in yttrium hydride Reviewed

Ayako Ohmura, Akihiko Machida, Tetsu Watanuki, Katsutoshi Aoki, Satoshi Nakano, K. Takemura

APPLIED PHYSICS LETTERS   91 ( 15 )   2007.10

Pressure-induced Structural change from hexagonal to fcc metal lattice in scandium trihydride Reviewed

A. Ohmura, A. Machida, T. Watanuki, K. Aoki, S. Nakano, K. Takemura

J. Alloys Compd.   446-447   598 - 602   2007.10

Long-period stacking structures in yttrium trihydride at high pressure Reviewed

A. Machida, A. Ohmura, T. Watanuki, K. Aoki, K. Takemura

Phys. Rev. B:   76 ( 5 )   052101-1 - 052101-4   2007.8

High-pressure study of YH3 by Raman and visible absorption spectroscopy Reviewed

Tetsuji Kume, Hiroyuki Ohura, Shigeo Sasaki, Hiroyasu Shimizu, Ayako Ohmura, Akihiko Machida, Tetsu Watanuki, Katsutoshi Aoki, Kenichi Takemura

PHYSICAL REVIEW B   76 ( 2 )   2007.7

Development of a single-crystal X-ray diffraction system for hydrostatic-pressure and low-temperature structural measurement and its application to the phase study of quasicrystals Reviewed

T. Watanuki, A. MacHida, T. Ikeda, A. Ohmura, H. Kaneko, K. Aoki, T. J. Sato, A. P. Tsai

Philosophical Magazine   87 ( 18-21 )   2905 - 2911   2007.7

X-ray diffraction investigation of the hexagonal-fcc structural transition in yttrium trihydride under hydrostatic pressure Reviewed

A. Machida, A. Ohmura, T. Watanuki, T. Ikeda, K. Aoki, S. Nakano, K. Takemura

Solid State Communications   138 ( 9 )   436 - 440   2006.6

Single Crystal Synchrotron X-Ray Diffraction Study under Pressure in UGe2 Reviewed

Naofumi Aso, Kenji Ohwada, Tetsu Watanuki, Akihiko Machida, Ayako Ohmura, Toshiya Inami, Yoshiya Homma, Yoshinobu Shiokawa, Kazuma Hirota, Noriaki K. Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75   88 - 90   2006.1

Band gap closing in yttrium hydride at high prebures Reviewed

Ayako Ohmura, Akihiko Machida, Tetsu Watanuki, Katsutoshi Aoki, Satoshi Nakano, K. Takemura

Joint 20th AIRAPT and 43rd EHPRG International Conference on High Pressure Science and Technology   2005.1

Determination of low-pressure crystalline-liquid phase boundary of SnI4 Reviewed

Kazuhiro Fuchizaki, Yasuhiko Fujii, Yasuo Ohishi, Ayako Ohmura, Nozomu Hamaya, Yoshinori Katayama, Taku Okada

Journal of Chemical Physics   120 ( 23 )   11196 - 11199   2004.6

Structural analysis of a high-pressure amorphous phase of SnI4 Reviewed

A. Ohmura, N. Hamaya, K. Sato, C. Ogawa, M. Isshiki, Y. Ohishi

Journal of Physics Condensed Matter   14 ( 44 )   10553 - 10556   2002.11

Investigation of topological phase transition in BiTeBr under high pressure

A Ohmura, Y Higuchi, T Ochiai, M Kanou, S Nakano, F Ishikawa, A Nakayama, Yuh Yamada, T Sasagawa

Journal of Physics: Conference Series   950   042036 - 042036   2017.10

六方晶窒化ホウ素の各種圧媒体での加圧と構造および振動状態の圧力依存性

中山敦子, 三谷翔平, 田口翔太郎, 梅津拓人, 星野豪, 佐藤貴明, 中野智志, 谷口尚, 大村彩子, 石川文洋, 山田裕

高圧討論会講演要旨集   56th   2015

9aPS-84 Transport properties of YBa_2Cu_4O_8 single crystal grown by KOH flux method

Ishikawa F., Sawamura Naoko, Takahashi Hiroki, Nakayama A., Ohmura A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   69 ( 2 )   422 - 422   2014.8

28aPS-104 Single crystal growth of Zn-substituted YBa_2Cu_4O_8 using KOH-NaOH flux

Takahashi H., Sawamura N., Ishikawa F., Yamada Yuh, Nakayama A., Ohmura A.

Meeting abstracts of the Physical Society of Japan   69 ( 1 )   617 - 617   2014.3

27pPSA-47 Substituted effect on conductivity on iron oxypnictide Sr_2CrFe_2As_2O_2

Eguchi N., Wakabayashi T., Sanngu K., Hirata K., Yamagishi T., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   69 ( 1 )   574 - 574   2014.3

六方晶窒化ホウ素の水素中での加圧と圧力誘起構造相転移

中山敦子, 田口翔太郎, 三谷翔平, 中野智志, 谷口尚, 大村彩子, 石川文洋, 山田裕

高圧討論会講演要旨集   55th   2014

高圧水素雰囲気下での六方晶窒化ホウ素の構造変化

田口翔太郎, 中山敦子, 山田裕, 石川文洋, 大村彩子, 谷口尚, 中野智志

物構研サイエンスフェスタ要旨集   2013   2014

27pXZE-8 Synthesis of new series of Fe-oxypnictides with 21222 structure

Ishikawa F., Eguchi N., Wakabayashi T., Hirata K., Kikuchi M., Sangu K., Kodama M., Nakayama A., Ohmura A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   68 ( 1 )   663 - 663   2013.3

27pXZE-7 Synthesis of new iron-oxypnictide Sr_2CrFe_2As_2O_2 and its properties under high pressure

Eguchi N., Wakabayashi T., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   68 ( 1 )   663 - 663   2013.3

Pressure-induced phase-transition of cuprate superconductor YBa_2Cu_4O_8 : Crystal structure of high-pressure phase and its superconductivity Reviewed

Atsuko Nakayama, Fumihiro Ishikawa, Keisuke Yuh, Yamada, Yusuke Onda, Shuhei Yamada, Hiroshi Fujihisa, Masafumi Sakata, Yuki Nakamoto, Katsuya Shimizu, Satoshi Nakano, Ayako Ohmura

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   549 - 549   2013

Phase transition and electrical resistivities of the cuprate with the CuO double chain under high pressure Reviewed

Yuh Yamada, A. Ohmura, F.Ishikawa, R.Kobayashi, S.Yamada, A.Nakayama, U.Fujihisa, M.Sakata, Y.Nakamoto, K.Shimizu, S.Nakano

Meeting Abstracts of the Physical Society of Japan   68 ( 0 )   510 - 510   2013

3GPa以下での水素中の六方晶窒化ホウ素の振動状態と構造の変化

田口翔太郎, 中山敦子, 三谷翔平, 谷口尚, 中野智志, 大村彩子, 石川文洋, 山田裕

物構研サイエンスフェスタ要旨集   1st   2013

20pPSA-20 Investigation of superconductivity and crystal structure in Bi_<35>Te_<65> under high pressure

Einaga M., Ohmura A., Ishikawa F., Nakayama A., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   67 ( 2 )   648 - 648   2012.8

20pPSB-32 Synthesis and properties of iron-based oxypnictide with blocking layers

Eguchi N., Wakabayashi T., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   67 ( 2 )   564 - 564   2012.8

20pPSA-19 Effect of pressure on the superconducting transition in Cu_<0.25>Bi_2(Te_xSe_<1-x>)_3

Ohmura A., Matsuzawa M., Einaga M., Ishikawa F., Nakayama A., Yamada Yuh, Suzuki Y., Komatsu M., Kashiwagi T., Kadowaki K.

Meeting abstracts of the Physical Society of Japan   67 ( 2 )   647 - 647   2012.8

25aPS-133 The relation between pressure-induced phase separation and superconducting transition temperature in bismuth-antimony alloy Bi_<1-x>Sb_x

Ohmura A., Yamamura A., Einaga M., Nakayama A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   67 ( 1 )   623 - 623   2012.3

25aPS-134 Pressure-induced superconductivity in n-type Bi_2Te_3 with non-stoichiometric composition

Einaga M., Ohmura A., Nakayama A., Ishikawa F., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   67 ( 1 )   623 - 623   2012.3

27aCF-9 Pressure-induced phase-separation of graphite observed in MCMBs-H_2

Isurugi Yuya, Nakayama Atsuko, Taguchi Shoutarou, Kiryuu Aoi, Nakano Satoshi, Ohmuram Ayako, Ishikawa Fumihiro, Yamada Yuh, Fujihisa Hiroshi

Meeting abstracts of the Physical Society of Japan   67 ( 1 )   924 - 924   2012.3

25aPS-87 Synthesis and properties of Sr_4Cr_2Fe_2As_2O_6

Ishikawa F., Kodama M., Watanabe T., Eguchi N., Nakayama A., Ohmura A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   67 ( 1 )   613 - 613   2012.3

放射光X線回折によるテルル化ビスマスのbcc構造への圧力誘起相転移 Reviewed

榮永茉利, 大村彩子, 中山敦子, 石川文洋, 山田裕, 中野智志

Photon Factory News   29 ( 4 )   17   2012

高圧水素下における銀ろうの構造変化の観察

田口翔太郎, 石動裕也, 中山敦子, 山田裕, 石川文洋, 大村彩子, 中野智志

PFシンポジウム要旨集   29th   2012

2GPa以下での水素中の六方晶窒化ホウ素の構造変化

田口翔太郎, 副田大介, 中山敦子, 中野智志, 谷口尚, 大村彩子, 石川文洋, 山田裕

高圧討論会講演要旨集   53rd   2012

圧力を利用した炭素ナノ構造体の水素貯蔵に関する構造的研究

石動裕也, 中山敦子, 田口翔太郎, 木竜葵, 中野智志, 大村彩子, 石川文洋, 山田裕, 藤久裕司

PFシンポジウム要旨集   29th   2012

21pRA-2 Magnetic properties of nonstoichiometric Fe_2VAl_<1+δ>

Ishikawa F., Okawara Y., Nakayama A., Ohmura A., Yamada Yuh, Naka T., Matsushita A.

Meeting abstracts of the Physical Society of Japan   66 ( 2 )   412 - 412   2011.8

22aPS-104 Pressure-induced superconductivity and structural phase transition in Bi_<1-x>Sb_x

Ohmura A., Yamamura A., Einaga M., Nakayama A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   66 ( 2 )   532 - 532   2011.8

22aPS-105 Transport property in hexagonal Bi_2Te_3 under high pressure up to 8 GPa

Einaga M., Ohmura A., Nakayama A., Ishikawa F., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   66 ( 2 )   533 - 533   2011.8

24aTE-10 Vibrational state of h-BN pressurized in a hydrogen atmosphere

Nakayama Atsuko, Soeda Daisuke, Isurugi Yuya, Ohmura Ayako, Ishikawa Fumohiro, Yamada Yuh, Nakano Satoshi, Taniguchi Takashi

Meeting abstracts of the Physical Society of Japan   66 ( 2 )   891 - 891   2011.8

25aHE-9 Magnetic properties of Fe_2VAl_<1+δ>

Ishikawa F., Okawara Y., Nakayama A., Ohmura A., Yamada Yuh, Naka T., Matsushita A.

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   453 - 453   2011.3

26pPSA-49 Transport Property in Bi_2Te_3 and Bi_2Se_3 under High Pressure

Einaga M., Ohmura A., Nakayama A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   629 - 629   2011.3

26aEG-9 Pressure-induced superconductivity and structural phase transition in Bi_<1-x>Sb_x

Ohmura A., Yamamura A., Einaga M., Nakayama A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   818 - 818   2011.3

25aTB-2 Vibrational state of h-BN pressurized in a hydrogen atmosphere

Nakayama Atsuko, Soeda Daisuke, Isurugi Yuya, Ohmura Ayako, Ishikawa Fumihiro, Yamada Yuh, Nakano Satoshi, Taniguchi Takashi

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   844 - 844   2011.3

25pPSB-56 Pressure effects on transport mechanism of ruprates with double chain

Fujimaki Koji, Katoh Hiroki, Fukushima Seiya, Ishikawa Fumihiro, Ohmura Ayako, Nakayama Atsuko, Yamada Yuh, Takeshita Nao

Meeting abstracts of the Physical Society of Japan   66 ( 1 )   577 - 577   2011.3

高圧水素雰囲気中で観察されるナノグラファイトの構造変化

石動裕也, 田口翔太郎, 副田大介, 中山敦子, 中野智志, 大村彩子, 石川文洋, 山田裕, 藤久裕司

高圧討論会講演要旨集   52nd   2011

高圧水素中で観察されるhBNの振動状態

中山敦子, 副田大介, 石動裕也, 田口翔太郎, 中野智志, 谷口尚, 大村彩子, 石川文洋, 山田裕

高圧討論会講演要旨集   52nd   2011

Structure and superconductivity of Bi-Sb alloy under high pressure

OHMURA Ayako, YAMAMURA Ayako, EINAGA Mari, NAKAYAMA Atsuko, ISHIKAWA Fumihiro, YAMADA Yuh, NAKANO Satoshi

51   178 - 178   2010.10

Development of the ultra-small high pressure cell using a technique of modified-Bridgman type anvils for magnetization measurements under high pressure

ISHIKAWA Fumihiro, FUJIMAKI Koji, EINAGA Mari, OHMURA Ayako, NAKAYAMA Atsuko, YAMADA Yuh, MATSUSHITA Akiyuki, NAKA Takashi, NAKANISHI Takeshi

51   278 - 278   2010.10

Investigation of crystal structure and superconductivity in phase IV of Bi_2Te_3 under high pressure

EINAGA Mari, ISHIKAWA Fumihiro, OHMURA Ayako, NAKAYAMA Atsuko, YAMADA Yuh, NAKANO Satoshi

51   91 - 91   2010.10

Crystal structure and properties of iron-pnictide BaFe_2As_2 under high pressure

EGUCHI Naoya, KODAMA Michihiro, FUJIMAKI Koji, EINAGA Mari, ISHIKAWA Fumihiro, OHMURA Ayako, NAKAYAMA Atsuko, YAMADA Yuh, NAKANO Satoshi

51   207 - 207   2010.10

25pPSA-9 Electrical transport and magnetic property of Fe_2VAl_<1±δ>(δ≦0.04) Heusler alloy

Ohkawara Y., Eguchi N., Kodama M., Fujimaki K., Ishikawa F., Yamada Yuh, Nakayama A., Ohmura A.

Meeting abstracts of the Physical Society of Japan   65 ( 2 )   431 - 431   2010.8

23aPS-30 Oxygen compositon dependence of electronic transport property in Pr_2Ba_4Cu_7O_<15-δ>

Fukushima S., Fujimaki K., Yamada S., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh, Matsushita A.

Meeting abstracts of the Physical Society of Japan   65 ( 2 )   466 - 466   2010.8

23aPS-134 Effect of Sb doping level and pressure on the electrical resistivity of Bi_<1-x>Sb_x(x<0.22)

Yamamura A., Ohmura A., Einaga M., Nakayama A., Ishikawa F., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   65 ( 2 )   491 - 491   2010.8

20pPSB-8 Crystal structure of BaFe_2As_2 under high-pressure

Eguchi N., Kodama M., Fujimaki K., Einaga M., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh, Mitsuda A., Nakano S.

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   578 - 578   2010.3

21aGR-1 Equation of state for solid neon at ultrahigh pressures

Takemura K., Watanuki T., Ohwada K., Machida A., Ohmura A., Aoki K.

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   869 - 869   2010.3

20aPS-108 Pressure effect of superconductivity and crystal structure in Bi_<1-x>Sb_x

Ohmura A., Yamamura A., Tanabe Y., Einaga M., Nakayama A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   545 - 545   2010.3

20pPSA-15 Synthesis of single crystalline sample Pr_2Ba_4Cu_7O_<15-δ>

Kato H., Fukushima S., Onda Y., Ishikawa F., Yamada Y., Ohmura A., Nakayama A., Matsushita A., Horii S.

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   568 - 568   2010.3

20pHY-14 Pressure-induced superconductivity and structural phase transition in Bi_2Te_3

Einaga M., Nakayama A., Ohmura A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   821 - 821   2010.3

23pGH-5 Anisotropic pressure effects on pressure-induced superconductivity in BaFe_2As_2

Ishikawa F., Eguchi N., Kodama M., Fujimaki K., Einaga M., Nakayama A., Ohmura A., Matoba T., Mitsuda A., Wada Hirofumi, Yamada Yuh

Meeting abstracts of the Physical Society of Japan   65 ( 1 )   686 - 686   2010.3

26pYA-13 Structure and electrical property of Bi_<1-x>Sb_x under high pressure

Ohmura A., Tanabe Y., Einaga M., Ishikawa F., Nakayama A., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   707 - 707   2009.8

26aPS-113 High-pressure studies on structure and properties of iron arsenide BaFe_2As_2 produced by high-pressure synthesis

Eguchi N., Kodama M., Fujimaki K., Einaga M., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh, Mitsuda A., Nakano S.

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   503 - 503   2009.8

26aPS-110 High-pressure synthesis and properties of iron-based oxypnictide superconductor

Kodama M., Eguchi N., Fujimaki K., Einaga M., Ohmura A., Ishikawa F., Nakayama A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   502 - 502   2009.8

28aRH-4 Pressure-induced superconductivity in BaFe_2As_2

Ishikawa F., Eguchi N., Kodama M., Fujimaki K., Einaga M., Nakayama A., Ohmura A., Mitsuda A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   560 - 560   2009.8

25aPS-120 Investigation of the superconductivity in crystalline phase III of Bi_2Te_3 under high pressure

Einaga M., Nakayama A., Ohmura A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   443 - 443   2009.8

26aPS-20 Pressure-induced structural-phase trandsition of YBa_2Cu_4O_8

Onda Y., Hiura Y., Nakayama A., Ishikawa F., Ohmura A., Yamada Yuh, Nakano S., Matsushita A.

Meeting abstracts of the Physical Society of Japan   64 ( 2 )   482 - 482   2009.8

27pTH-9 Anisotropic transport properties of Fe_2VAl Heusler alloy

Ishikawa F., Hirota S., Ohmura A., Nakayama A., Yamada Yuh, Matsushita A.

Meeting abstracts of the Physical Society of Japan   64 ( 1 )   459 - 459   2009.3

28aPS-30 Pressure dependence of superconducting transition temperature in YbGa_<1.1>Si_<0.9>

Ohmura A., Fujimaki K., Einaga M., Ishikawa F., Nakayama A., Yamada Yuh, Imai M., Tsujii N.

Meeting abstracts of the Physical Society of Japan   64 ( 1 )   602 - 602   2009.3

28aPS-37 Pressure-induced structural change in the Bi_<1-x>Sb_x alloys

Tanabe Y., Einaga M., Nakayama A., Ohmura A., Ishikawa F., Yamada Yuh, Nakano S.

Meeting abstracts of the Physical Society of Japan   64 ( 1 )   604 - 604   2009.3

YbGa_1.1Si_0.9の超伝導転移温度の圧力効果

大村彩子, 藤巻孔二, 榮永茉利, 石川文洋, 中山敦子, 山田裕, 今井基晴, 辻井直人

日本物理学会講演概要集   64 ( 1 )   2009

22aPS-99 The rare earth dependence of photocatalytic activities on Ba_2RBiO_6 (R=rare earth) oxide

Hatakeyama T., Takeda S., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh, Matsushita A., Ye Jinhua

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   673 - 673   2008.8

21pPSA-35 Transport properties of Fe_2VAl_<1+δ> single crystal under high pressure

Hirota S., Tanabe Y., Ishikawa F., Nakayama A., Ohmura A., Yamada Yuh, Matsushita A.

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   393 - 393   2008.8

23pVE-9 High pressure Raman and UV-vis. spectra of Sc hydride

Kume T., Takeichi T., Sasaki S., Shimizu H., Machida A., Watanuki T., Aoki K., Ohmura A., Takemura K.

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   895 - 895   2008.8

20pPSB-31 Synthesis and superconducting properties of MoSr_2YCu_2O_<8-δ> system under high pressure

Fujimaki K., Udagawa K., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   477 - 477   2008.8

20pPSB-29 Magnetic properties of Pr_2Ba_4Cu_7O_<15-δ> oxide superconductor under high pressure

Onda Y., Hiura Y., Ishikawa F., Ohmura A., Nakayama A., Yamada Yuh, Matsushita A.

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   476 - 476   2008.8

20pPSB-30 Pressure dependence of crystal structure and electrical conduction on Pr_2Ba_4Cu_7O_<15-δ>

Hiura Y., Onda Y., Einaga M., Nakayama A., Ishikawa F., Ohmura A., Yamada Yuh, Kagayama T., Nakano S., Matsushita A.

Meeting abstracts of the Physical Society of Japan   63 ( 2 )   477 - 477   2008.8

エネルギー利用を目指した水素化物の材料設計

池田一貴, 李海文, 大村彩子, 松尾元彰, 佐藤豊人, 中森裕子, 折茂慎一

高圧力の科学と技術   18 ( 2 )   180 - 185   2008.5

Frontier of high pressure research on metal hydrides Reviewed

Katsutoshi Aoki, Akihiko Machida, Ayako Ohmura, Tetsu Watanuki

Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu   18 ( 3 )   273 - 278   2008

24aTD-7 Pressure induced disproportionation in rare-earth metal dihydrides

Machida A., Ohmura A., Watanuki T., Aoki K.

Meeting abstracts of the Physical Society of Japan   62 ( 2 )   1013 - 1013   2007.8

Long-period stacking structures in yttrium trihydride at high pressure Reviewed

A. Machida, A. Ohmura, T. Watanuki, K. Aoki, K. Takemura

PHYSICAL REVIEW B   76 ( 5 )   2007.8

20pXB-9 Structural transition process in yttrium trihydride under high pressure

Machida A., Ohmura A., Watanuki T., Aoki K., Takemura K.

Meeting abstracts of the Physical Society of Japan   62 ( 1 )   975 - 975   2007.2

24aZD-2 Pressure dependence of the infrared spectra of scandium hydride ScH_x

Omura Ayako, Machida Akihiko, Watanuki Tetsu, Aoki Katsutoshi, Takemura K.

Meeting abstracts of the Physical Society of Japan   61 ( 2 )   790 - 790   2006.8

25pYK-17 Raman and visible absorption spectra of YH_3 under high pressure

Kume T., Ohura H., Sasaki S., Shimizu H., Ohmura A., Machida A., Watanuki T., Aoki K., Takemura K.

Meeting abstracts of the Physical Society of Japan   61 ( 2 )   808 - 808   2006.8

25pYK-16 Structural transition in yttrium trihydride under high pressure

Machida A., Ohmura A., Watanuki T., Aoki K., Takemura K.

Meeting abstracts of the Physical Society of Japan   61 ( 2 )   808 - 808   2006.8

28pXE-9 Structural deformation of Cd-Yb quasicrystal under high pressure and low temperature

Watanuki T., Machida A., Ohmura A., Aoki K., Ohwada K., Sato T.J., Tsai A.P.

Meeting abstracts of the Physical Society of Japan   61 ( 1 )   778 - 778   2006.3

27pXD-8 High pressure infrared spectroscopy of scandium hydride

Omura Ayako, Machida Akihiko, Watanuki Tetsu, Aoki Katsutoshi, Takemura K.

Meeting abstracts of the Physical Society of Japan   61 ( 1 )   926 - 926   2006.3

27pXD-7 Structural transition in lanthanum hydride under high pressure

Machida A., Ohmura A., Watanuki T., Aoki K., Takemura K.

Meeting abstracts of the Physical Society of Japan   61 ( 1 )   926 - 926   2006.3

Infrared spectroscopic study of the band-gap closure in YH3 at high pressure

A Ohmura, A Machida, T Watanuki, K Aoki, S Nakano, K Takemura

PHYSICAL REVIEW B   73 ( 10 )   2006.3

希土類金属水素化物の高圧下の構造・電子転移 Reviewed

青木勝敏, 綿貫徹, 町田晃彦, 大村彩子

固体物理   41 ( 11 )   780   2006

21aYE-8 Structural and electronic transition in rare-earth metal hydrides under high pressure

Machida A., Ohmura A., Watanuki T., Aoki K., Nakano S., Takemura K.

Meeting abstracts of the Physical Society of Japan   60 ( 2 )   818 - 818   2005.8

21aYE-7 Pressure-induced structural changes of scandium hydride

Ohmura Ayako, Machida Akihiko, Watanuki Tetsu, Aoki Katsutoshi, Nakano Satoshi, Takemura K.

Meeting abstracts of the Physical Society of Japan   60 ( 2 )   818 - 818   2005.8

20pYK-12 Structural deformation of Cd-Yb quasicrystal under hydrostatic pressure.

Watanuki T., Machida A., Ohmura A., Aoki K., Ohwada K., Sato T. J., Tsai A. P.

Meeting abstracts of the Physical Society of Japan   60 ( 2 )   648 - 648   2005.8

25aYM-3 Pressure dependence of the infrared spectra of metallic hydride YH_x

Ohmura Ayako, Machida Akihiko, Watanuki Tetsu, Aoki Katsutoshi, Nakano Satoshi, Takemura Kenichi

Meeting abstracts of the Physical Society of Japan   60 ( 1 )   902 - 902   2005.3

27aYQ-8Structural deformation of Cd-Yb quasicrystal under hydrostatic pressure.

Watanuki T., Machida A., Ohmura A., Aoki K., Ohwada K., Sato T.J., Tsai A.P.

Meeting abstracts of the Physical Society of Japan   60 ( 1 )   761 - 761   2005.3

14pTJ-8 High-pressure synthesis and structural properties of La- and Y-hydride

Machida A., Watanuki T., Ohmura A., Aoki K., Nakano S., Takemura K.

Meeting abstracts of the Physical Society of Japan   59 ( 2 )   878 - 878   2004.8

Phase boundary between low-pressure crystalline state of molecular crystal SnI_4 and liquid state under hydrostatic pressure II

FUCHIZAKI K., OHMURA A., HAMAYA N., NAGAI K., OHISHI Y., KATAYAMA Y., FUJII Y.

Meeting abstracts of the Physical Society of Japan   58 ( 2 )   749 - 749   2003.8

24aPS-61 Transport properties of K(Fe_<1-x>Co_x)_2As_2 under high pressure

Sangu K., Eguchi N., Hirata K., Yamagishi T., Okaji R., Ishikawa F., Nakayama A., Ohmura A., Yamada Yuh

Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

Bi系層状ラシュバ物質群における圧力誘起超伝導および構造相転移の研究

2016.4 - 2019.3

System name：科学研究費補助金 基盤研究（C）

Awarding organization：日本学術振興会

大村 彩子

環境低負荷型電子デバイスへの応用に向けたビスマス系新奇超伝導材料の基礎物性研究

2014 - 2015

System name：試験研究費助成

Awarding organization：一般財団法人佐々木環境技術振興財団

大村 彩子

多重極限下の電子・熱物性測定と結晶構造解析による圧力誘起トポロジカル超伝導の研究

2013.4 - 2015.3

System name：科学研究費補助金 新学術領域研究「対称性の破れた凝縮系におけるトポロジカル量子現象」

Awarding organization：文部科学省

大村 彩子

電子輸送特性と結晶構造の低温高圧下同時測定によるビスマス系化合物の超伝導の研究

2012.4 - 2014.3

System name：科学研究費補助金 若手研究（B）

Awarding organization：日本学術振興会

大村 彩子

高圧力下熱電能測定装置の開発とBi系合金における高圧下電子状態に関する研究

2010

System name：育英奨学会研究助成

Awarding organization：公益財団法人ユニオンツール

大村 彩子

フラストレート系CuOジグザグチェーンにおける超伝導の研究

Grant number：20046006

2008 - 2009

System name：科学研究費助成事業

Research category：特定領域研究

Awarding organization：日本学術振興会

山田 裕, 中山 敦子, 石川 文洋, 大村 彩子

圧力を用いた炭素π電子系配列ナノ空間の水素吸蔵についての研究

Grant number：20045003

2008 - 2009

System name：科学研究費助成事業

Research category：特定領域研究

Awarding organization：日本学術振興会

中山 敦子, 山田 裕, 石川 文洋, 大村 彩子

20 GPa超級改良型ブリッジマンアンビルセルの開発とシリコンの圧力誘起金属相における超伝導特性の探索に関する研究

2008

System name：育英奨学会研究助成

Awarding organization：公益財団法人ユニオンツール

大村 彩子

磁気天秤を用いた5GPa級高圧下精密帯磁率測定装置の開発

Grant number：19654050

2007 - 2008

System name：科学研究費助成事業

Research category：萌芽研究

Awarding organization：日本学術振興会

山田 裕, 石川 文洋, 大村 彩子, 中西 剛司, 名嘉 節

固体物性物理学I

不規則系物理学II

理学スタディ・スキルズ

電磁気学IIB

電磁気学IIA

課題研究C

課題研究D

課題研究A

課題研究B

自然科学基礎実験

先端科学技術総論

現代物理学セミナーB

現代物理学セミナーA

専門力アクティブ・ラーニング

安全教育

固体物性物理学Ⅰ

物性物理学

理学スタディ・スキルズ

物理学基礎実習a

物理学基礎実習b

物理学基礎ゼミ

物理学実験C

物理学実験B

物理学実験A

物理学実験D

物性物理学II

電磁気学a

現代物理学への招待(物理学学習法)

物性物理学I

物理学実験a

物理学実験b