Highly Isotropic In-plane Upper Critical Field in the Anisotropic s-Wave Superconductor 2H-NbSe2

Syuma Yasuzuka, Shinya Uji, Shiori Sugiura, Taichi Terashima, Yoshio Nogami, Koichi Ichimura, Satoshi Tanda

Research output: Contribution to journalArticle

Abstract

Resistivity measurements for a layered transition metal dichalcogenide 2H-NbSe2 were performed to investigate the in-plane anisotropy of the upper critical field (Hc2) for magnetic fields up to 14.5 T at temperatures down to 2.0 K. For fields rotated within the basal plane, the in-plane anisotropy of a characteristic field H (defined as the field strength at which the resistivity reaches zero) showed twofold symmetry at low temperatures. On the basis of this result, the in-plane anisotropy of Hc2 and the superconducting gap structure in 2H-NbSe2 are discussed.

Original languageEnglish
Pages (from-to)953-958
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume33
Issue number4
DOIs
Publication statusPublished - Apr 1 2020

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Keywords

  • 2H-NbSe
  • Anisotropic s-wave superconductivity
  • Superconducting gap
  • Upper critical field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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