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arXiv · 1102.3403

Magnetization dynamics and Majorana fermions in ferromagnetic Josephson junctions along the quantum spin Hall edge

Annica M. Black-Schaffer·Jacob Linder
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Abstract

We investigate the interplay between ferromagnetic and superconducting order at the edge of a quantum spin Hall insulator. Using complementary analytical and self-consistent numerical approaches, we study a ferromagnetic Josephson junction and show how the direct coupling between magnetism and the superconducting U(1) phase gives rise to several unusual phenomena which distinguishes the present system from its non-topological equivalent. In particular, we demonstrate how the anomalous current-phase relation triggers supercurrent-induced magnetization dynamics and also study the spatial localization of the Majorana fermions appearing in the junction.

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Annica M. Black-Schaffer, Jacob Linder. 2011-06-15. Magnetization dynamics and Majorana fermions in ferromagnetic Josephson junctions along the quantum spin Hall edge. https://doi.org/10.1103/physrevb.83.220511

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