Multi-Valley Superconductivity in Ion-Gated MoS<sub>2</sub> Layers

POSTER

Abstract

Charge carrier concentrations~1014cm-2 induce a superconducting state in MoS2 [1, 2]. Here we report low-temperature transport measurements in electrical double layer-gated MoS2 flakes from 4 to 10 layers. We observe two kinks in the resistivity as a function of doping, which indicate the crossing of the spin-orbit split sub-bands Q1 and Q2 [3]. Superconductivity does not appear until both spin-orbit split sub-bands are simultaneously populated.

1 J. T. Ye, et al., Science 338, 1193 (2012).
2 D. Costanzo, et al., Nat. Nano. 11, 339 (2016).
3 T. Brumme, et al., Phys. Rev. B 93, 081407 (2016).

Presenters

  • Domenico De Fazio

    • Cambridge Graphene Centre, University of Cambridge

Authors

  • Domenico De Fazio

    • Cambridge Graphene Centre, University of Cambridge

  • Erik Piatti

    • Department of Applied Science and Technology, Polytechnic University of Turin

  • Dario Daghero

    • Department of Applied Science and Technology, Polytechnic University of Turin

  • Srinivasa Tamalampudi

    • Cambridge Graphene Centre, University of Cambridge

  • Duhee Yoon

    • Cambridge Graphene Centre, University of Cambridge

  • Renato Gonnelli

    • Department of Applied Science and Technology, Polytechnic University of Turin

  • Andrea Ferrari

    • Univ of Cambridge
    • Cambridge Graphene Centre, Electrical Engineering, University of Cambridge
    • Cambridge Graphene Centre, University of Cambridge
    • Cambridge Graphene Centre, Electrical Engineering, University of cambridge