Anisotropic josephson-vortex dynamics in layered organic superconductor with d-wave pairing symmetry

Syuma Yasuzuka, Kazuya Saito, Shinya Uji, Motoi Kimata, Hidetaka Satsukawa, Taichi Terashima, Jun Ichi Yamada

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

To study the anisotropic Josephson-vortex dynamics in the layered organic superconductor κ-(ET)2Cu(NCS)2, we intensively investigated the in-plane anisotropy of flux-flow resistivity in the non-Ohmic regime. Sharp peaks due to dissipative processes associated with the vortex dynamics were clearly observed in all in-plane magnetic field directions. The dependence of the flux-flow resistivity on in-plane field-orientation showed a fourfold symmetry with broad maxima along the [0,±1,±1] directions and cusp-like minima along the [0,±1, 0] and [0, 0,±1] directions. The origin of the fourfold symmetry in terms of the interplay between the d-wave superconducting gap symmetry and the anisotropic viscous motion of the vortices is discussed.

Original languageEnglish
Article number064716
Journaljournal of the physical society of japan
Volume82
Issue number6
DOIs
Publication statusPublished - 2013 Jun
Externally publishedYes

Keywords

  • (ET)Cu(NCS)
  • D-wave pairing
  • Flux-flow resistivity
  • Josephson-vortex
  • Superconducting gap

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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