Dynamical vortex phase diagram of two-dimensional superconductivity in gated Mo S2

Yu Saito, Yuki M. Itahashi, Tsutomu Nojima, Yoshihiro Iwasa

Research output: Contribution to journalArticlepeer-review

Abstract

Recent discoveries of two-dimensional (2D) superconductors have uncovered various aspects of physical properties including vortex matter. In this paper, we report transport properties and a dynamical phase diagram at zero magnetic field in ion-gated MoS2. In addition to the universal jump in the current-voltage characteristic showing unambiguous evidence of the Berezinskii-Kosterlitz-Thouless transition, we observed multiple peaks in the temperature and current derivative of the electrical resistance, based on which a dynamical phase diagram in the current-temperature plane was constructed. We found current-induced dynamical states of vortex-antivortex pairs, containing that with the phase slip line. Also, we present a global phase diagram of vortices in gated MoS2 which captures the nature of vortex matter of clean 2D superconductors.

Original languageEnglish
Article number074003
JournalPhysical Review Materials
Volume4
Issue number7
DOIs
Publication statusPublished - 2020 Jul

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

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