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arXiv · 1008.0849

Chain of Majorana States from Superconducting Dirac Fermions at a Magnetic Domain Wall

Titus Neupert·Shigeki Onoda·Akira Furusaki
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Abstract

We study theoretically a strongly type-II s-wave superconducting state of two-dimensional Dirac fermions in proximity to a ferromagnet having in-plane magnetization. It is shown that a magnetic domain wall can host a chain of equally spaced vortices in the superconducting order parameter, each of which binds a Majorana fermion state. The overlap integral of neighboring Majorana states is sensitive to the position of the chemical potential of the Dirac fermions. This leads to a characteristic V-shaped dependence of thermal conductivity of Majorana fermions on the chemical potential.

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Titus Neupert, Shigeki Onoda, Akira Furusaki. 2010-11-15. Chain of Majorana States from Superconducting Dirac Fermions at a Magnetic Domain Wall. https://doi.org/10.1103/physrevlett.105.206404

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