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ID 56314
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Author
Tanaka, Kenta K. Department of Physics, Okayama University
Ichioka, Masanori Department of Physics, Okayama University
Onari, Seiichiro Department of Physics, Okayama University
Abstract
Local NMR relaxation rates in the vortex state of chiral and helical p-wave superconductors are investigated by the quasiclassical Eilenberger theory. We calculate the spatial and resonance frequency dependences of the local NMR spin-lattice relaxation rate T-1(-1) and spin-spin relaxation rate T-2(-1). Depending on the relation between the NMR relaxation direction and the d-vector symmetry, the local T-1(-1) and T-2(-1) in the vortex core region show different behaviors. When the NMR relaxation direction is parallel to the d-vector component, the local NMR relaxation rate is anomalously suppressed by the negative coherence effect due to the spin dependence of the odd- frequency s-wave spin-triplet Cooper pairs. The difference between the local T-1(-1) and T-2(-1) in the site-selective NMR measurement is expected to be a method to examine the d-vector symmetry of candidate materials for spin-triplet superconductors.
Note
This is an article published by American Physical Society
Published Date
2018-04-10
Publication Title
Physical Review B
Volume
volume97
Publisher
American Physical Society
Start Page
134507
ISSN
2469-9950
NCID
AA11187113
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
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publisher
DOI
Web of Sience KeyUT
Related Url
isVersionOf https://doi.org/10.1103/PhysRevB.97.134507