Site-selective NMR for odd-frequency Cooper pairs around vortex in chiral p-wave superconductors
Superconductivity
2016-03-15 v1
Abstract
In order to identify the pairing symmetry with chirality, we study site-selective NMR in chiral p-wave superconductors. We calculate local nuclear relaxation rate 1/T_1 in the vortex lattice state by Eilenberger theory, including the applied magnetic field dependence. We find that 1/T_1 in the NMR resonance line shape is different between two chiral states p_{pm}(=p_x{pm}ip_y), depending on whether the chirality is parallel or anti-parallel to the vorticity. Anomalous suppression of 1/T_1 occurs around the vortex core in the chiral p_- wave due to the negative coherence term coming from the odd-frequency s-wave Cooper pair induced around the vortex with Majorana state.
Keywords
Cite
@article{arxiv.1603.00558,
title = {Site-selective NMR for odd-frequency Cooper pairs around vortex in chiral p-wave superconductors},
author = {Kenta K. Tanaka and Masanori Ichioka and Seiichiro Onari},
journal= {arXiv preprint arXiv:1603.00558},
year = {2016}
}
Comments
6 pages, 4 figures