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

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

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8 Citations (Scopus)


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
Issue number7
Publication statusPublished - 2020 Jul


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