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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 | 2002/12 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | An unusual hollow cylindrical Fermi surface of a quasi-two-dimensional compound CeAgSb2 |
| 執筆形態 | その他 |
| 掲載誌名 | PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES |
| 出版社・発行元 | TAYLOR & FRANCIS LTD |
| 巻・号・頁 | 82(18),pp.1867-1892 |
| 担当区分 | 責任著者 |
| 著者・共著者 | Y Inada,A Thamizhavel,H Yamagami,T Takeuchi,Y Sawai,S Ikeda,H Shishido,T Okubo,M Yamada,K Sugiyama,N Nakamura,T Yamamoto,K Kindo,T Ebihara,A Galatanu,E Yamamoto,R Settai,Y Onuki |
| 概要 | We have carried out the de Haas-van Alphen (dHvA) experiment, together with electrical resistivity, magnetic susceptibility, magnetization and specific heat experiments on a high-quality single-crystal CcAgSb(2), which has a small net ferromagnetic moment of 0.4 mu(B) per Cc atom. The bulk magnetic properties are well explained by the crystalline electric field scheme. On the other hand, large dHvA frequencies of 10(8) Oe, which correspond to cylindrical Fermi surfaces, were detected by the dHvA measurement for the magnetic field along the tetragonal [001] direction, indicating the quasi-two-dimensional electronic structure. The dHvA branches of CeAgSb2 are highly different from those with small dHvA frequencies of 10(7) Oe for the reference compounds LaAgSb2 and YAgSb2 which exhibit a semimetallic character. The dHvA results have been compared with the results of the energy band calculations. It was concluded that the 4f electron is mainly localized and that the Fermi surface of CeAgSb2 is similar to that of LaAgSb2, but it is slightly enlarged so as to form the large orbits along a hollow cylindrical Fermi surface. |
| DOI | 10.1080/1364281021000036823 |
| ISSN | 0141-8637 |