Upper critical field in electron-doped cuprate superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$: two-gap model

T. B. Charikova; N. G. Shelushinina; G. I. Harus; D. S. Petukhov; V. N. Neverov; A. A. Ivanov

doi:10.1016/j.physc.2013.02.010

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arXiv · 1212.6118

Upper critical field in electron-doped cuprate superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$: two-gap model

T. B. Charikova·N. G. Shelushinina·G. I. Harus·D. S. Petukhov·V. N. Neverov·A. A. Ivanov

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Abstract

We present resistivity measurements of the upper critical field (H$_{c2}$) phase diagram as a function of temperature (T) for Nd$_{1.85}$Ce$_{0.15}$CuO$_{4+δ}$/SrTiO$_3$ single crystal films with different degree of disorder ($δ$) in magnetic fields up to 90 kOe at temperatures down to 0.4 K. The data are well described by a two-band/two-gap model for a superconductor in the dirty limit.

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T. B. Charikova, N. G. Shelushinina, G. I. Harus, D. S. Petukhov, V. N. Neverov, A. A. Ivanov. 2012-12-26. Upper critical field in electron-doped cuprate superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$: two-gap model. https://doi.org/10.1016/j.physc.2013.02.010

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