75As-NMR studies on LaFeAsO 1-xF x (x = 0:14) under a pressure of 3 GPa

Kenichiro Tatsumi, Naoki Fujiwara, Hironari Okada, Hiroki Takahashi, Yoichi Kamihara, Masahiro Hirano, Hideo Hosono

研究成果: Article査読

24 被引用数 (Scopus)

抄録

75As-nuclear magnetic resonance (NMR) on an iron (Fe)-based superconductor LaFeAsO 1-xF x (x = 0:14) was performed under a pressure of 3 GPa. Enhancement of the superconducting transition temperature (T c) was confirmed from the relaxation rate (1=T 1); T c goes up to 40K by applying pressure up to 3 GPa. 1=T 1T, which is temperature independent just above T c and gives a measure of the density of states (DOS) at the Fermi energy, enhances by applying pressure. These facts suggest that an increase of the DOS leads to the enhancement of T c. On the other hand, anomalous behavior of 1=T 1T observed at high temperatures is suppressed by applying pressure.

本文言語English
論文番号023709
ジャーナルJournal of the Physical Society of Japan
78
2
DOI
出版ステータスPublished - 2009 2
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「<sup>75</sup>As-NMR studies on LaFeAsO <sub>1-x</sub>F <sub>x</sub> (x = 0:14) under a pressure of 3 GPa」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル