YbNiSi3 : An antiferromagnetic Kondo lattice with strong exchange interaction
Physical Review B - Condensed Matter and Materials Physics 70 巻 10 号
100409-1-100409-4 頁
2004-09-30 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
YbNiSi3 : An antiferromagnetic Kondo lattice with strong exchange interaction
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| 作成者 |
Avila Marcos A.
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| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 70 |
| 号 | 10 |
| 開始ページ | 100409-1 |
| 終了ページ | 100409-4 |
| 抄録 |
We report on the structural, thermodynamic, and transport properties of high quality single crystals of YbNiSi3 grown by the flux method. This compound crystallizes in the SmNiGe3 layered structure type of the Cmmm space group. The general physical behavior is that of a Kondo lattice showing an antiferromagnetic ground state below TN=5.1 K. This is among the highest ordering temperatures for a Yb-based intermetallic, indicating strong exchange interaction between the Yb ions, which are in or very close to +3 valency based on the effective moment of 4.45μB/f.u. The compound has moderately heavy-electron behavior with a Sommerfeld coefficient of 190 mJ/mol K2. Resistivity is highly anisotropic and for I ⊥ b exhibits the signature logarithmic increase below a local minimum, followed by a sharp decrease in the coherent/magnetically ordered state, resulting in a residual resistivity of 1.5 μΩ cm and a residual resistivity ratio of 40. Fermi-liquid behavior consistent with a ground-state doublet is clearly observed below 1 K.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2004-09-30 |
| 権利情報 |
Copyright (c) 2004 The American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.70.100409
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.62.13860
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