Eilenberger theory for nuclear magnetic relaxation rate in superconducting vortex lattice state
Kenta K. Tanaka, Masanori Ichioka, Seiichiro Onari, Noriyuki Nakai, Kazushige Machida
DOI 10.1103/PhysRevB.91.014509 · Physical Review B
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Abstract
On the basis of the Eilenberger theory, spatial variation of the local NMR relaxation rate T1−1 is quantitatively estimated in the vortex lattice state, to clarify the differences between the s-wave and the d-wave superconductors. We study the temperature and the magnetic field dependencies of T1−1 inside and outside of the vortex core, including influences of nonmagnetic impurity scatterings in the Born limit and in the unitary limit. These results are helpful to detect detailed characters of local electronic structures in the vortex lattice states via site-selective NMR experiments.
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