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ID 19308
本文ファイル
著者
Terashima, Taichi
Terakura, Chieko
Uji, Shinya
Aoki, Haruyoshi
Echizen, Yuji
抄録(英)
The resistivity and Hall effect in CeNiSn are measured at temperatures down to 35 mK and in magnetic fields up to 20 T with the current applied along the b axis. The resistivity at zero field exhibits a quadratic temperature dependence below ∼0.16 K with a huge coefficient of the T2 term (54 μΩ cm/K2). The resistivity as a function of field shows an anomalous maximum and dip, the positions of which vary with field directions. Shubnikov-de Haas (SdH) oscillations with a frequency F of ∼100 T are observed for a wide range of field directions in the ac and bc planes, and the quasiparticle mass is determined to be ∼(10-20) me. The carrier density is estimated to be ∼10-3 electron/Ce. In a narrow range of field directions in the ac plane, where the magnetoresistance-dip anomaly manifests itself clearer than in other field directions, a higher-frequency (F=300-400 T) SdH osciliation is found at high fields above the anomaly. This observation is discussed in terms of possible field-induced changes in the electronic structure.
掲載誌名
Physical Review B - Condensed Matter and Materials Physics
66巻
7号
開始ページ
075127-1
終了ページ
075127-7
出版年月日
2002-08-30
出版者
American Physical Society
ISSN
1098-0121
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2002 The American Physical Society.
関連情報URL
部局名
先端物質科学研究科