Resistivity, Hall effect, and Shubnikov–de Haas oscillations in CeNiSn

• Terashima, Taichi

• Terakura, Chieko

• Uji, Shinya

• Aoki, Haruyoshi

• Echizen, Yuji

• Takabatake, Toshiro

抄録

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.

収録刊行物

• Physical Review B - Condensed Matter and Materials Physics

  Physical Review B - Condensed Matter and Materials Physics 66 (7), 075127-1-075127-7, 2002-08-30

  American Physical Society

詳細情報

• CRID: 1050296265987554560
• NII論文ID: 120000880291
• NII書誌ID: AA11187113
• Web Site: http://ir.lib.hiroshima-u.ac.jp/00019308
• 本文言語コード: en
• 資料種別: journal article
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