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Two-mode electrodynamics of superconductors in the mixed state

E. B. Sonin, A. K. Tagantsev, K. B. Traito

DOI 10.1103/PhysRevB.46.5830 · Physical Review B

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Abstract

The surface impedance of type-II superconductors in the mixed state has been studied, taking into account the vortex elasticity and nonlocality (long-range interaction of vortices). An electromagnetic wave penetrates into a superconductor as a superposition of two exponentially decaying modes with different penetration lengths, in contrast with one mode in a normal conductor or in a superconductor in the Meissner state. The second mode is an elastic mode of the vortex array; it is crucial for incorporation of vortex elasticity and surface pinning into electrodynamics.

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