論文

査読有り
2017年8月

Magnetic and superconducting properties of a heavy-fermion CeCoIn5 epitaxial film probed by nuclear quadrupole resonance

PHYSICAL REVIEW B
  • Takayoshi Yamanaka
  • ,
  • Masaaki Shimozawa
  • ,
  • Hiroaki Shishido
  • ,
  • Shunsaku Kitagawa
  • ,
  • Hiroaki Ikeda
  • ,
  • Takasada Shibauchi
  • ,
  • Takahito Terashima
  • ,
  • Yuji Matsuda
  • ,
  • Kenji Ishida

96
6
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.96.060507
出版者・発行元
AMER PHYSICAL SOC

Since the progress in the fabrication techniques of thin films of exotic materials such as strongly correlated heavy-fermion compounds, microscopic studies of the magnetic and electronic properties inside the films have been needed. Herein, we report the observation of In-115 nuclear quadrupole resonance (NQR) in an epitaxial film of the heavy-fermion superconductor CeCoIn5, for which the microscopic field gradient within the unit cell as well as magnetic and superconducting properties at zero field are evaluated. We find that the nuclear spin-lattice relaxation rate in the film is in excellent agreement with that of bulk crystals, whereas the NQR spectra show noticeable shifts and significant broadening indicating a change in the electric-field distribution inside the film. The analysis implies a displacement of In layers in the film, which, however, does not affect the magnetic fluctuations and superconducting pairing. This implies that inhomogeneity of the electronic field gradient in the film sample causes no pair-breaking effect.

Web of Science ® 被引用回数 : 2

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.96.060507
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000408343400002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevB.96.060507
  • ISSN : 2469-9950
  • eISSN : 2469-9969
  • Web of Science ID : WOS:000408343400002

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