Knight shift spectrum in vortex states in s- and d-wave superconductors on the basis of Eilenberger theory

Kenta K. Tanaka; Masanori Ichioka; Noriyuki Nakai; Kazushige Machida

doi:10.1103/PhysRevB.89.174504

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Knight shift spectrum in vortex states in s- and d-wave superconductors on the basis of Eilenberger theory

Kenta K. Tanaka, Masanori Ichioka, Noriyuki Nakai, Kazushige Machida

DOI 10.1103/PhysRevB.89.174504 · Physical Review B

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Abstract

From the spatial structure of vortex lattice state calculated by Eilenberger theory, we study the resonance line shape of Knight shift of the paramagnetic moments in s- and d-wave superconductors, comparing with the Redfield pattern of the internal field distribution. We discuss the deviation from the temperature dependence of the Yosida function and the magnetic field dependence of the paramagnetic susceptibility. In addition to the calculation in the clean limit, influences of the impurity scattering are estimated in the Born limit and in the unitary limit. These results are helpful for the analysis of NMR experiments to know properties of the superconductors.