論文

査読有り
2018年1月

Spatially Inhomogeneous Superconducting State near H-c2 in UPd2Al3

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Shunsaku Kitagawa
  • ,
  • Ryoichi Takaki
  • ,
  • Masahiro Manago
  • ,
  • Kenji Ishida
  • ,
  • Noriaki K. Sato

87
1
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7566/JPSJ.87.013701
出版者・発行元
PHYSICAL SOC JAPAN

We have performed Al-27-NMR measurements on single-crystalline UPd2Al3 with the field parallel to the c-axis to investigate the superconducting (SC) properties near the upper critical field of superconductivity H-c2. The broadening of the NMR linewidth below 14 K indicates the appearance of the internal field at the Al site, which originates from the antiferromagnetically ordered moments of U 5f electrons. In the SC state well below mu H-0(c2) = 3.4 T, the broadening of the NMR linewidth due to the SC diamagnetism and a decrease in the Knight shift are observed, which are well-understood by the framework of spin-singlet superconductivity. In contrast, the Knight shift does not change below T-c(H), and the NMR spectrum is broadened symmetrically in the SC state in the field range of 3 T < mu H-0 < mu H-0(c2). The unusual NMR spectrum near H-c2 suggests that a spatially inhomogeneous SC state such as the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state would be realized.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.7566/JPSJ.87.013701
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000417949100002&DestApp=WOS_CPL
ID情報
  • DOI : 10.7566/JPSJ.87.013701
  • ISSN : 0031-9015
  • Web of Science ID : WOS:000417949100002

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