Multiple superconducting gaps, anisotropic spin fluctuations and spin-orbit coupling in iron-pnictides

Jie Yang, Guo Qing Zheng

Research output: Contribution to journalReview articlepeer-review

6 Citations (Scopus)

Abstract

This article reviews the NMR and NQR studies on iron-based high-temperature superconductors by the IOP/Okayama group. It was found that the electron pairs in the superconducting state are in the spin-singlet state with multiple fully-opened energy gaps. The antiferromagnetic spin fluctuations in the normal state are found to be closely correlated with the superconductivity. Also, the antiferromagnetic spin fluctuations are anisotropic in the spin space, which is different from the case in copper oxide superconductors. This anisotropy originates from the spin-orbit coupling and is an important reflection of the multiple-bands nature of this new class of superconductors.

Original languageEnglish
Article number1230008
JournalModern Physics Letters B
Volume26
Issue number15
DOIs
Publication statusPublished - Jun 20 2012

Keywords

  • Cooper-pair symmetry
  • Iron-based high-T superconductor
  • multiple gap
  • nuclear magnetic resonance
  • spin fluctuations
  • spin-orbit coupling

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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