Abstract
The sharp suppression of the de-Haas van-Alphen oscillations observed in the mixed superconducting (SC) state of the heavy fermion compound URu2Si2 is shown to confirm a theoretical prediction of a narrow double-stage SC phase transition, smeared by fluctuations, in a 3D paramagnetically-limited superconductor. The predicted scenario of a second order transition to a nonuniform (FFLO) state followed by a first order transition to a uniform SC state, obtained by using a non-perturbative approach, is also found to be consistent with recent thermal conductivity measurements performed on this material.
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Zhuravlev, V., Maniv, T. Double-stage continuous-discontinuous superconducting phase transition in the Pauli paramagnetic limit of a 3D superconductor: the URu2Si2 case. Eur. Phys. J. B 73, 347–351 (2010). https://doi.org/10.1140/epjb/e2010-00012-y
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DOI: https://doi.org/10.1140/epjb/e2010-00012-y