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 journalArticlepeer-review

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
Pages (from-to)62-64
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume530
DOIs
Publication statusPublished - Nov 15 2016

Keywords

  • Chiral p-wave superconductor
  • Quasiclassical theory
  • Vortex

ASJC Scopus subject areas

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

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