Model for vortex-core tunneling spectroscopy of chiral p-wave superconductors via odd-frequency pairing states.
2009
The local density of states is studied theoretically in terms of the odd-frequency (odd-ω) Cooper pairing induced around a vortex core. We find that a zero energy peak in the density of states at the vortex center is robust against nonmagnetic impurities in a chiral p-wave superconductor owing to an odd-ω s-wave pair amplitude. We suggest how to discriminate a spin-triplet pairing symmetry and spatial chiral-domain structure by scanning tunneling spectroscopy via odd-ω pair amplitudes inside vortex cores
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