論文

査読有り
2014年6月

Spin-Triplet Superconductivity Induced by Longitudinal Ferromagnetic Fluctuations in UCoGe Probed by Co-59 NMR Measurement

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Taisuke Hattori
  • ,
  • Yoshihiko Ihara
  • ,
  • Kosuke Karube
  • ,
  • Daisuke Sugimoto
  • ,
  • Kenji Ishida
  • ,
  • Kazuhiko Deguchi
  • ,
  • Noriaki K. Sato
  • ,
  • Tomoo Yamamura

83
6
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7566/JPSJ.83.061012
出版者・発行元
PHYSICAL SOC JAPAN

In this review, we present a summary of our experimental results suggesting that the superconducting ferromagnet UCoGe is a spin-triplet superconductor, along with some of the basic physical properties of UCoGe in the normal state. We show experimental evidence that superconductivity in UCoGe is mediated by longitudinal ferromagnetic fluctuations predominant above the superconducting-transition temperature T-SC. This is obtained from the tuning of ferromagnetic fluctuations and superconductivity by changing the external field along the magnetic easy axis, the c-axis. In addition, we show that the spin susceptibility perpendicular to the spontaneous magnetic moment, which is probed by Knight-shift measurement, is almost constant in the superconducting state. The behavior of the susceptibility and the invariance of the spontaneous moment below T-SC can be consistently explained by the equal-spin pairing state with a large exchange field along the c-axis.

Web of Science ® 被引用回数 : 10

リンク情報
DOI
https://doi.org/10.7566/JPSJ.83.061012
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000336733300013&DestApp=WOS_CPL
ID情報
  • DOI : 10.7566/JPSJ.83.061012
  • ISSN : 0031-9015
  • Web of Science ID : WOS:000336733300013

エクスポート
BibTeX RIS