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ヤマガミ ヒロシ
YAMAGAMI HIROSHI
山上 浩志 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2002/06 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Heavy fermions in cerium and uranium compounds studied by the de Haas-van Alphen experiment |
| 執筆形態 | その他 |
| 掲載誌名 | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS |
| 出版社・発行元 | PERGAMON-ELSEVIER SCIENCE LTD |
| 巻・号・頁 | 63(6-8),pp.1133-1139 |
| 著者・共著者 | S Araki,R Settai,M Nakashima,H Shishido,S Ikeda,H Nakawaki,Y Haga,N Tateiwa,TC Kobayashi,H Harima,H Yamagami,Y Aoki,T Namiki,H Sato,Y Onuki |
| 概要 | We carried out the de Haas-van Alphen (dHvA) experiment under pressure to clarify the nature of f-electron compounds of CeRh2Si2, UGe2 and CeCoIn5. With increasing pressure, the Neel temperature T-N = 36 K in CeRh2Si2 and the Curie temperature T-C = 52 K in UGe2 decrease, and a quantum critical point corresponding to the extrapolation T-N or T-C --> 0 is reached at the critical pressure p(c) similar or equal to 1.06 and 1.52 GPa, respectively. Experimental results indicate a discontinuous change of the Fermi surface in CeRh2Si2 and UGe2 when the pressure crosses pc. A heavy fermion superconductor CeCoIn5 with a quasi-two dimensional Fermi surface was found to be located in the vicinity of the quantum critical point. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| DOI | 10.1016/S0022-3697(02)00156-7 |
| ISSN | 0022-3697/1879-2553 |