2010年12月
As-75-nuclear magnetic relaxation on LaFeAsO1-xFx under pressure
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
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- 巻
- 470
- 号
- 開始ページ
- S347
- 終了ページ
- S348
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physc.2009.10.156
- 出版者・発行元
- ELSEVIER SCIENCE BV
As-75-nuclear magnetic relaxation rate (1/T-1) was measured under pressure in LaFeAsO1-xFx (x = 0.08 and 0.14). For the x = 0.14 doped samples, 1/T1T = constant is observed at ambient pressure just above T-c, and application of pressure enhances the value, similar to the behavior of T-c. 1/T1T = constant originates from the Korringa relation, and an increase in DOS due to pressure application leads to the enhancement of T-c. In the case of x = 0.08, 1/T1T = constant is observed in a wide T range above T-c, and the value is enhanced compared to the case of x = 0.14. The enhancement is attributable to antiferromagnetic spin fluctuation rather than an increase in DOS. (C) 2009 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.physc.2009.10.156
- ISSN : 0921-4534
- Web of Science ID : WOS:000286075700150