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arXiv · 1007.2386

Anisotropic superconductivity in layered LaSb$_2$: the role of phase fluctuations

S. Guo·D. P. Young·P. W. Adams·X. S. Wu·J. Y. Chan·G. T. McCandless·J. F. DiTusa
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Abstract

We present magnetic susceptibility and electrical transport measurements of the highly anisotropic compound LaSb$_2$ observing a very broad transition into a clean, consistent with type-I, superconducting state with distinct features of 2 dimensionality. Application of hydrostatic pressure induces a 2- to 3-dimensional crossover evidenced by a reduced anisotropy and transition width. The superconducting transition appears phase fluctuation limited at ambient pressure with fluctuations observed for temperatures greater than 8 times the superconducting critical temperature.

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S. Guo, D. P. Young, P. W. Adams, X. S. Wu, J. Y. Chan, G. T. McCandless, J. F. DiTusa. 2010-11-18. Anisotropic superconductivity in layered LaSb$_2$: the role of phase fluctuations. https://arxiv.org/abs/1007.2386

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