Effects of vorticity and impurity on NMR relaxation rate in chiral p-wave superconductors

Kenta K. Tanaka, Masanori Ichioka, Seiichiro Onari

Research output: Contribution to journalArticle

Abstract

In order to study site-selective NMR in chiral p-wave superconductors, we calculate local nuclear relaxation rate T1-1 in the vortex lattice state by Eilenberger theory with and without non-magnetic impurity scattering in the Born limit and unitary limit. The local T1-1 in the NMR resonance line shape is different between two chiral states p ±, depending on whether the chirality is parallel or anti-parallel to the vorticity. In the p--wave, anomalous suppression of local T1-1 occurs around the vortex core due to the negative coherence term coming from odd-frequency s-wave Cooper pair induced around the vortex. We especially examine the site dependence of the anomalous suppression of local T1-1, including the applied magnetic field dependence and the impurity effects.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
DOIs
Publication statusAccepted/In press - Jan 30 2016

Keywords

  • Chiral p-wave superconductor
  • Quasiclassical theory
  • Vortex

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

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