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arXiv · 1010.4365

The estimation of coherence length for electron-doped superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$

T. B. Charikova·G. I. Harus·N. G. Shelushinina·O. E. Sochinskaya
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Abstract

Results of low-temperature upper critical field measurements for Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$ single crystals with various $x$ and nonstoichiometric disorder ($δ$) are presented. The coherence length of pair correlation $ξ$ and the product $k_F$$ξ$, where $k_F$ is the Fermi wave vector, are estimated. It is shown that for investigated single crystals parameter $k_F$$ξ$ $\cong$ 100 and thus phenomenologically NdCeCuO - system is in a range of Cooper-pair-based (BCS) superconductivity.

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T. B. Charikova, G. I. Harus, N. G. Shelushinina, O. E. Sochinskaya. 2010-10-21. The estimation of coherence length for electron-doped superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+δ}$. https://doi.org/10.1063/1.3592218

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