研究者詳細 - 摂待　力生

MISC - 摂待　力生

分割表示 1,079 件中 1,021 - 1,040 件目／全件表示 >>

DE HAAS-VAN-ALPHEN STUDIES OF RARE-EARTH COMPOUNDS

R SETTAI, T EBIHARA, M TAKASHITA, H SUGAWARA, N KIMURA, K MOTOKI, Y ONUKI, S UJI, H AOKI

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 140 1153 - 1154 1995年2月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

The de Haas-van Alphen amplitude of branch d in CeIn3 is reduced with oscillation by three orders of magnitude when the field is tilted from [100] to [110] in the {100} plane. This is explained by considering the angular dependence of the cyclotron mass and the electron spin g-factor.

DOI： 10.1016/0304-8853(94)01454-X

Web of Science

researchmap

The specific heat of single crystal NdCu2

S. Takayanagi, H. Yamazaki, N. Shibuya, Y. Sugawara, P. Svoboda, Y. Onuki, R. Settai, N. Wada

PHYSICA B-CONDENSED MATTER 206 395 - 397 1995年2月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We present the measurements of the specific heat C of NdCu2 on single crystal samples of high purity in the temperature range between 0.7 K and 70 K. We observed three peaks: two are first order peaks at T-R1 = 3.97 K and T-R2 = 4.22 K and one is the antiferromagnetic transition at T-N = 6.50 K. The gap in the density of state of the antiferromagnetic spin wave band is found below T-R2. The specific heat observed below T-R1 is well expressed by the gap type formula C = gamma T + beta T-m(3) exp(-delta/k(B)T). We show good correlation between the entropies of NdCu2 and the magnetic resistivity measured along the crystal b-axis.

DOI： 10.1016/0921-4526(94)00470-G

Web of Science

researchmap

Magnetoresistance and de Haas-van Alphen Effect in UPt3

Noriaki Kimura, Rikio Settai, Yoshichika Ōnuki, Yoshichika Ōnuki, Etsuji Yamamoto, Hiroyuki Toshima, Kunihiko Maezawa, Haruyoshi Aoki, Hisatomo Harima

Journal of the Physical Society of Japan 64 ( 10 ) 3881 - 3889 1995年

記述言語：英語

We have done the transverse magnetoresistance and the de Haas-van Alphen (dHvA) experiments in UPt3. The magnetoresistance increases in the whole field direction. UPt3 is thus a compensated metal, possessing no open orbits. As for the dHvA experiment, we have observed at least three new branches. One of them is in the basal plane and the others are around the [0001] direction. The branches with dHvA frequencies of 2.7×10 Oe and 4.9×10 Oe in the field along [0001] possess large masses of 40–50 m0. These results have been discussed on the basis of the 5f-itinerant Fermi surface model. © 1995, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

DOI： 10.1143/JPSJ.64.3881

Scopus

researchmap

Magnetoresistance and de Haas-van Alphen Effect in YRu2Si2

Haruhisa Ikezawa, Masahiro Takashita, Takao Ebihara, Kazuyuki Motoki, Rikio Settai, Noriaki Kimura, Yoshichika Ōnuki, Hitoshi Sugawara, Tadashi Fukuhara, Kunihiko Maezawa

Journal of the Physical Society of Japan 64 ( 9 ) 3422 - 3428 1995年

記述言語：英語

We have measured the magnetoresistance and the de Haas-van Alphen effect of YRu2Si2. The Fermi surface and cyclotron mass of YRu2Si2 are compared to those of LaRu2Si2 and LaRu2Ge2. Main hole Fermi surfaces of the three compounds are similar and ellipsoidal in shape, which occupy about half of the Brillouin zone. The small hole Fermi surface with a shape of rugby ball is one in number for YRu2Si2, while three for LaRu2Si2 and LaRu2Ge2. A cylindrical Fermi surface and a multiply-connected Fermi surface exist for YRu2Si2, while there exists a doughnut like electron Fermi surface for LaRu2Si2 and LaRu2Ge2. The cyclotron masses of YRu2Si2 are about 50% and 10% larger than those of LaRu2Si2 and LaRu2Ge2, respectively. © 1995, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

DOI： 10.1143/JPSJ.64.3422

Scopus

researchmap

Magnetoresistance and de Haas-van Alphen Effect in YbGa2

Hitoshi Sugawara, Kazuyuki Motoki, Tsuyoshi Yamazaki, Takao Ebihara, Noriaki Kimura, Masahiro Takashita, Junya Itoh, Hiroyuki Toshima, Rikio Settai, Yoshichika Ōnuki

Journal of the Physical Society of Japan 64 ( 9 ) 3360 - 3364 1995年

de Haas-van Alphen Effect and Fermi Surface of the Antiferromagnetic Compound NdPb3

Takao Ebihara, Hiroyuki Toshima, Kazuyuki Motoki, Haruhisa Ikezawa, Rikio Settai, Noriaki Kimura, Yoshichika Ōnuki, Hisatomo Harima, Piotor Sławiński, Zbigniew Kletowski

Journal of the Physical Society of Japan 64 ( 9 ) 3416 - 3421 1995年

記述言語：英語

We have observed the de Haas-van Alphen oscillation of the antiferromagnetic compound NdPb3. Main Fermi surfaces consist of four closed ones, which are in good agreement with the results of band calculations based on the FLAPW method for the non-magnetic reference compound LuPb3. The cyclotron effective masses are in the range of 0.4 m0 to 3 m0. © 1995, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

DOI： 10.1143/JPSJ.64.3416

Scopus

researchmap

Superconducting Properties and de Haas-van Alphen Effect in CeCo2 Single Crystal

Hitoshi Sugawara, Yoshihiko Kobayashi, Hiroki Sato, Tsuguhito Nishigaki, Yuji Aoki, Hideyuki Sato, Rikio Settai, Yoshichika Ōnuki, Osamu Inoue

Journal of the Physical Society of Japan 64 ( 10 ) 3639 - 3642 1995年

Magnetoresistance and de Haas-van Alphen Effect in UPt3

J. Phys. Soc. Jpn., 64, 3881-3889 64, 3881-3889 1995年

Magnetoresistance and de Haas-van Alphen Effect in UPt3

J. Phys. Soc. Jpn., 64, 3881-3889 64, 3881-3889/, 1995年

de Haas-van Alphen Effect in LaAg and CeAg

Kazuyuki Motoki, Rikio Settai, Noriaki Kimura, Hiroyuki Toshima, Takao Ebihara, Haruhisa Ikezawa, Hisatomo Harima, Yoshichika Ōnuki, Hisatomo Harima

Journal of the Physical Society of Japan 64 ( 9 ) 3328 - 3335 1995年

記述言語：英語

We have observed the de Haas-van Alphen oscillation in LaAg and CeAg. Four kinds of closed Fermi surfaces are detected in LaAg, which are in good agreement with the results of band calculations. In CeAg, each Fermi surface is split into two Fermi surfaces with the up- and down-spin states due to the ferromagnetic exchange interaction. The cyclotron mass of CeAg is not very large, which is only by 40% larger than the corresponding mass of LaAg. © 1995, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

DOI： 10.1143/JPSJ.64.3328

Scopus

CiNii Article

researchmap

de Haas-van Alphen Effect in LaAg and CeAg

Kazuyuki Motoki, Rikio Settai, Noriaki Kimura, Hiroyuki Toshima, Takao Ebihara, Haruhisa Ikezawa, Hisatomo Harima, Yoshichika Ōnuki, Hisatomo Harima

Journal of the Physical Society of Japan 64 ( 9 ) 3328 - 3335 1995年

記述言語：英語

DOI： 10.1143/JPSJ.64.3328

Scopus

researchmap

4a-PS-23 YRu_2Si_2のドハース、ファンアルフェン効果とスピン因子