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

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.

4 pages, 2 figures

References in corpus (3)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Shadow on the wall cast by an Abrikosov vortex
• Effect of Surface Andreev Bound States on the Bean-Livingston Barrier in d-Wave Superconductors

Cited by in corpus (3)

• Majorana fermions of a two-dimensional Px+iPy superconductor
• Model for Vortex-core tunneling spectroscopy of chiral p-wave superconductors via odd-frequency pairing states
• Tunneling conductance and local density of states in time-reversal symmetry breaking superconductors under the influence of an external magnetic field