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

Fingerprint

Vorticity
vorticity
Superconducting materials
Vortex flow
Nuclear magnetic resonance
vortices
Impurities
impurities
nuclear magnetic resonance
retarding
nuclear relaxation
Chirality
resonance lines
chirality
line shape
Scattering
Magnetic fields
scattering
magnetic fields

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

Cite this

Effects of vorticity and impurity on NMR relaxation rate in chiral p-wave superconductors. / Tanaka, Kenta K.; Ichioka, Masanori; Onari, Seiichiro.

In: Physica C: Superconductivity and its Applications, 30.01.2016.

Research output: Contribution to journalArticle

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