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Radio-frequency magnetic response of vortex lattices undergoing structural transformations

R. Prozorov·V. G. Kogan·M D. Vannette·S. L. Bud'ko·P. C. Canfield
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Abstract

We report a clear anomaly in the rf response of a tunnel-diode resonator measured in borocarbide crystals in dc fields along the $c-$axis. We associate the anomaly in the dynamic magnetic susceptibility, $χ$, with a structural transition in the vortex lattice. $χ$ is sensitive to the Campbell penetration depth $λ_{C}$ of the rf perturbation into the mixed state. $λ_{C}$ depends on the vortex lattice elastic moduli, which in turn depend on the vortex lattice structure. The high-field transition line is clearly mapped and shown to behave in agreement with theory.

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R. Prozorov, V. G. Kogan, M D. Vannette, S. L. Bud'ko, P. C. Canfield. 2007-02-22. Radio-frequency magnetic response of vortex lattices undergoing structural transformations. https://arxiv.org/abs/cond-mat/0702509

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