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

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

2007-10-23

arxiv.org/abs/0710.4204v1

Phys. Rev. Lett. 100, 177002 (2008)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.100.177002

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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