Induced Chiral f-wave Superconducting Pairing and Majorana Fermions in a Hole-doped Semiconductor

ORAL

Abstract

We show that a chiral f + if-wave superconducting pairing may be induced in the lowest heavy hole band of a hole-doped semiconductor thin film through proximity contact with an s-wave superconductor. The chirality of the pairing originates from the 3$\pi$ Berry phase accumulated for a heavy hole moving along a close path on the Fermi surface. There exist three chiral gapless Majorana edge states, in consistence with the chiral f + if-wave pairing. We show the existence of zero energy Majorana fermions in vortices in the semiconductor-superconductor heterostructure by solving the Bogoliubov-de-Gennes equations numerically as well as analytically in the strong confinement limit. The proposed semiconductor/superconductor heterostructure can be used as a platform for observing non-Abelian statistics and performing TQC.

*This work is supported by DARPA-YFA, DARPA-MTO, ARO, 973 program, NSFC, DoE, and the Welch Foundation.

Authors

  • Chuanwei Zhang

    • Department of Physics and Astronomy, Washington State University, Pullman, Washington, 99164 USA
    • Department of Physics and Astronomy, Washington State University
  • Li Mao

    • Department of Physics and Astronomy, Washington State University, Pullman, Washington, 99164 USA
  • Junren Shi

    • International Center for Quantum Materials, Peking University, Beijing 100871, China
  • Qian Niu

    • Department of Physics, The University of Texas, Austin, Texas 78712 USA