MISC

2015年5月

Reentrant Superconductivity Driven by Quantum Tricritical Fluctuations in URhGe: Evidence from Co-59 NMR in URh0.9Co0.1Ge

PHYSICAL REVIEW LETTERS
  • Y. Tokunaga
  • ,
  • D. Aoki
  • ,
  • H. Mayaffre
  • ,
  • S. Kraemer
  • ,
  • M. -H. Julien
  • ,
  • C. Berthier
  • ,
  • M. Horvatic
  • ,
  • H. Sakai
  • ,
  • S. Kambe
  • ,
  • S. Araki

114
21
開始ページ
216401-1-216401-5
終了ページ
記述言語
英語
掲載種別
DOI
10.1103/PhysRevLett.114.216401
出版者・発行元
AMER PHYSICAL SOC

Our measurements of the Co-59 NMR spin-spin relaxation in URh0.9Co0.1Ge reveal a divergence of electronic spin fluctuations in the vicinity of the field-induced quantum critical point at H-R approximate to 13 T, around which reentrant superconductivity (RSC) occurs in the ferromagnetic heavy fermion compound URhGe. We map out the strength of spin fluctuations in the (H-b; H-c) plane of magnetic field components and show that critical fluctuations develop in the same limited region near the field HR as that where RSC is observed. This strongly suggests these quantum fluctuations as the pairing glue responsible for the RSC. The fluctuations observed are characteristic of a tricritical point, followed by a phase bifurcation toward quantum critical end points.

Web of Science ® 被引用回数 : 37

リンク情報
DOI
https://doi.org/10.1103/PhysRevLett.114.216401
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000355101300014&DestApp=WOS_CPL

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