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arXiv · 0710.4204

Chirality sensitive effect on surface states in chiral p-wave superconductors

Takehito Yokoyama·Christian Iniotakis·Yukio Tanaka·Manfred Sigrist
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Abstract

We study the local density of states at the surface of a chiral p-wave superconductor in the presence of a weak magnetic field. As a result, the formation of low-energy Andreev bound states is either suppressed or enhanced by an applied magnetic field, depending on its orientation with respect to the chirality of the p-wave superconductor. Similarly, an Abrikosov vortex, which is situated not too far from the surface, leads to a zero-energy peak of the density of states, if its chirality is the same as that of the superconductor, and to a gap structure for the opposite case. We explain the underlying principle of this effect and propose a chirality sensitive test on unconventional superconductors.

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Takehito Yokoyama, Christian Iniotakis, Yukio Tanaka, Manfred Sigrist. 2007-10-23. Chirality sensitive effect on surface states in chiral p-wave superconductors. https://doi.org/10.1103/physrevlett.100.177002

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