論文

査読有り
2015年12月

Interface between heavy fermions and normal electrons investigated by spatially resolved nuclear magnetic resonance

PHYSICAL REVIEW B
  • Takayoshi Yamanaka
  • ,
  • Masaaki Shimozawa
  • ,
  • Ryota Endo
  • ,
  • Yuta Mizukami
  • ,
  • Hiroaki Shishido
  • ,
  • Takahito Terashima
  • ,
  • Takasada Shibauchi
  • ,
  • Yuji Matsuda
  • ,
  • Kenji Ishida

92
24
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.92.241105
出版者・発行元
AMER PHYSICAL SOC

We have studied the superlattices with alternating block layers (BLs) of heavy-fermion superconductor CeCoIn5 and conventional-metal YbCoIn5 by site-selective nuclear magnetic resonance spectroscopy, which uniquely offers spatially resolved dynamical magnetic information. We find that the presence of antiferromagnetic fluctuations is confined to the Ce BLs, indicating that magnetic degrees of freedom of f electrons are quenched inside the Yb BLs. Contrary to simple expectations that the two dimensionalization enhances fluctuations, we observe that antiferromagnetic fluctuations are rapidly suppressed with decreasing Ce BL thickness. Moreover, the suppression is more prominent near the interfaces between the BLs. These results imply significant effects of local inversion symmetry breaking at the interfaces.

Web of Science ® 被引用回数 : 14

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.92.241105
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000366093000001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevB.92.241105
  • ISSN : 1098-0121
  • eISSN : 1550-235X
  • Web of Science ID : WOS:000366093000001

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