Controllable Majorana fermions on domain walls of a magnetic topological insulator

Abstract

We propose to realize a one-dimensional chiral topological superconducting state at the magnetic domain walls stripe of a magnetic topological insulator coupled with a conventional $s$-wave superconductor. The localized Majorana zero modes can be constructed in a reconfigurable manner through magnetic domain writing by magnetic force microscopy. This proposal could be further extended to the Majorana zero modes at domain walls on superconducting spin-helical Dirac surface states, and may be applicable to the two-dimensional time-reversal invariant topological superconductor on FeTe${}_{0.5}$Se${}_{0.5}$ surface.

5.5 pages, 4 figures

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Cited by in corpus (4)

• Configuration-Sensitive Transport on Domain Walls of a Magnetic Topological Insulator
• Majorana-induced DC Shapiro steps in topological Josephson junctions
• Topological meron-antimeron domain walls and skyrmions in a low-symmetry system
• Theory of Josephson Current on a Magnetically Doped Topological Insulator