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Theory of vortex excitation imaging via an NMR relaxation measurement

Mitsuaki Takigawa·Masanori Ichioka·Kazushige Machida
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Abstract

The temperature dependence of the site-dependent nuclear spin relaxation time T_1 around vortices is studied in s-wave and d-wave superconductors.Reflecting low energy electronic excitations associated with the vortex core, temperature dependences deviate from those of the zero-field case, and T_1 becomes faster with approaching the vortex core. In the core region, T_1^{-1} has a new peak below T_c. The NMR study by the resonance field dependence may be a new method to prove the spatial resolved vortex core structure in various superconductors.

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Mitsuaki Takigawa, Masanori Ichioka, Kazushige Machida. 1999-06-07. Theory of vortex excitation imaging via an NMR relaxation measurement. https://doi.org/10.1103/physrevlett.83.3057

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