論文

査読有り
2011年

HEAVY FERMIONS AND SUPERCONDUCTIVITY IN THE KONDO-LATTICE MODEL WITH PHONONS

PHYSICAL PROPERTIES OF NANOSYSTEMS
  • O. Bodensiek
  • ,
  • R. Zitko
  • ,
  • R. Peters
  • ,
  • T. Pruschke

開始ページ
233
終了ページ
+
記述言語
英語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.1007/978-94-007-0044-4_19
出版者・発行元
SPRINGER

We study the Kondo lattice model with an additional Einstein phonon mode coupled via a Holstein term to the electrons within the dynamical mean-field theory at T = 0. As impurity solver we use the numerical renormalization group. We present results for the paramagnetic case showing the anticipated heavy Fermion physics, including direct evidence for the appearance of a large Fermi surface for antiferromagnetic exchange interaction.
By introducing a Nambu notation, we find that increasing electron-phonon coupling favors superconductivity, which however is not BCS like but shows additional structures in the density of states and the gap function.


リンク情報
DOI
https://doi.org/10.1007/978-94-007-0044-4_19
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000289872900019&DestApp=WOS_CPL
ID情報
  • DOI : 10.1007/978-94-007-0044-4_19
  • ISSN : 1871-465X
  • Web of Science ID : WOS:000289872900019

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