Magnetic heat transport in R2CuO4 (R=La, Pr, Nd, Sm, Eu, and Gd)
Physical Review B - Condensed Matter and Materials Physics 73 巻 10 号
104430-1-104430-7 頁
2006-03-21 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Magnetic heat transport in R2CuO4 (R=La, Pr, Nd, Sm, Eu, and Gd)
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| 作成者 |
Berggold K.
Lorenz T.
Baier J.
Kriener M.
Senff D.
Roth H.
Severing A.
Hartmann H.
Freimuth A.
Barilo S.
Nakamura Fumihiko
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| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 73 |
| 号 | 10 |
| 開始ページ | 104430-1 |
| 終了ページ | 104430-7 |
| 抄録 |
We have studied the thermal conductivity κ on single crystalline samples of the antiferromagnetic monolayer cuprates R2CuO4 with R=La, Pr, Nd, Sm, Eu, and Gd. For a heat current within the CuO2 planes, i.e., for κab we find high-temperature anomalies around 250K in all samples. In contrast, the thermal conductivity κc perpendicular to the CuO2 planes, which we measured for R=La, Pr, and Gd, shows a conventional temperature dependence as expected for a purely phononic thermal conductivity. This qualitative anisotropy of κi and the anomalous temperature dependence of κab give evidence for a significant magnetic contribution κmag to the heat transport within the CuO2 planes. Our results suggest, that a large magnetic contribution to the heat current is a common feature of single-layer cuprates. We find that κmag is hardly affected by structural instabilities, whereas already weak charge carrier doping causes a strong suppression of κmag .
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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 | 2006-03-21 |
| 権利情報 |
Copyright (c) 2006 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.73.104430
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.62.11527
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