Majorana Zero Modes Protected by Hopf Invariant in Topologically Trivial Superconductors

Zhongbo Yan; Ren Bi; Zhong Wang

doi:10.1103/physrevlett.118.147003

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arXiv · 1701.02558

Majorana Zero Modes Protected by Hopf Invariant in Topologically Trivial Superconductors

Zhongbo Yan·Ren Bi·Zhong Wang

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Abstract

Majorana zero modes are usually attributed to topological superconductors. We study a class of two-dimensional topologically trivial superconductors without chiral edge modes, which nevertheless host robust Majorana zero modes in topological defects. The construction of this minimal single-band model is facilitated by the Hopf map and the Hopf invariant. This work will stimulate investigations of Majorana zero modes in superconductors in the topologically trivial regime.

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Zhongbo Yan, Ren Bi, Zhong Wang. 2017-01-10. Majorana Zero Modes Protected by Hopf Invariant in Topologically Trivial Superconductors. https://doi.org/10.1103/physrevlett.118.147003

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