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arXiv · 1812.06633

Majorana zero modes in a quantum wire platform without Rashba spin-orbit coupling

Ömer M. Aksoy·John R. Tolsma
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Abstract

We propose a platform for engineering helical fermions in a hybridized double-quantum-wire setup. When our setup is proximity coupled to an $s$-wave superconductor it can become a class $D$ topological superconductor exhibiting Majorana zero modes. The goal of this proposal is to expand the group of available Hamiltonians to those without strong Rashba spin-orbit interactions which are essential to many other approaches. Furthermore, we show that there exist electron-electron interactions that stabilize fractional excitations which obey $\mathbb{Z}^{\,}_{3}$ parafermionic algebra.

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Ömer M. Aksoy, John R. Tolsma. 2020-05-18. Majorana zero modes in a quantum wire platform without Rashba spin-orbit coupling. https://doi.org/10.1103/physrevb.101.195127

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