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Topological superconductivity and Majorana fermions in the heterostructure of EuS island and planar gold surface

ORAL

Abstract

In a recent work [1], possible signatures of a pair of Majorana zero-energy modes were found
within the platform forming by EuS island and gold wire. In this work, we show the gold wire can
be replaced by a large gold surface in this platform. Furthermore, we found the chemical potential
step between the EuS island covering region and bare gold surface region are essential for keeping
a sizable topological region in the large gold surface case. Our results suggest the feasibility of
depositing EuS wires on a large area of gold and simplify the fabrication process further.

[1] S. Manna, P. Wei, Y. Xie, K. T. Law, P. A. Lee, and
J. Moodera, in press.

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Presenters

  • Yingming Xie

    Physics, Hong Kong University of Science and Technology, Hong Kong University of Science and Technology, Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China)

Authors

  • Yingming Xie

    Physics, Hong Kong University of Science and Technology, Hong Kong University of Science and Technology, Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China)

  • Kam Tuen Law

    Physics, Hong Kong University of Science and Technology, Department of Physics, Hong Kong University of Science and Technology, Hong Kong University of Science and Technology, Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China)

  • Patrick A Lee

    Department of Physics, Massachusetts Institute of Technology, MIT, Hong Kong University of Science and Technology, MASSACHUSETTS INSTITUTE OF TECHNOLOGY