1. Effects of vorticity and impurity on NMR relaxation rate in chiral p-wave superconductors.
- Author
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Tanaka, Kenta K., Ichioka, Masanori, and Onari, Seiichiro
- Subjects
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SUPERCONDUCTORS , *VORTEX motion , *METAL inclusions , *NUCLEAR magnetic resonance spectroscopy , *CHIRALITY - Abstract
In order to study site-selective NMR in chiral p -wave superconductors, we calculate local nuclear relaxation rate T 1 − 1 in the vortex lattice state by Eilenberger theory with and without non-magnetic impurity scattering in the Born limit and unitary limit. The local T 1 − 1 in the NMR resonance line shape is different between two chiral states p ± , depending on whether the chirality is parallel or anti-parallel to the vorticity. In the p − -wave, anomalous suppression of local T 1 − 1 occurs around the vortex core due to the negative coherence term coming from odd-frequency s -wave Cooper pair induced around the vortex. We especially examine the site dependence of the anomalous suppression of local T 1 − 1 , including the applied magnetic field dependence and the impurity effects. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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