論文

査読有り
2014年7月

Relationship between Ferromagnetic Criticality and the Enhancement of Superconductivity Induced by Transverse Magnetic Fields in UCoGe

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

83
7
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7566/JPSJ.83.073708
出版者・発行元
PHYSICAL SOC JAPAN

We have performed Co-59 NMR experiments on the ferromagnetic superconductor UCoGe under magnetic fields (H) along the -and b-axes to investigate the relationship between ferromagnetic properties and superconductivity. The ferromagnetic ordering temperature T-Curie is suppressed and the nuclear spin-lattice relaxation rate 1/T-1 at 2K is enhanced in H || b, although T-Curie and 1/T-1 are unchanged in H || a, indicating that the ferromagnetic criticality is induced only when H is applied along the b-axis. We show the close relationship between the magnetic anisotropies and the superconducting ones reported by Aoki et al.: the superconductivity is gradually suppressed in H || a, but enhanced in H || b above 5 T. We strongly suggest that the enhancement of the superconductivity observed in H b originates from the field induced ferromagnetic criticality, as pointed out by Aoki et al. and Mineev.

Web of Science ® 被引用回数 : 19

リンク情報
DOI
https://doi.org/10.7566/JPSJ.83.073708
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000339047900011&DestApp=WOS_CPL
ID情報
  • DOI : 10.7566/JPSJ.83.073708
  • ISSN : 0031-9015
  • Web of Science ID : WOS:000339047900011

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