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

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

doi:10.1063/1.3592218

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

Superconductivity 2015-05-20 v1

Authors: 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 $_{4+\delta}$ single crystals with various $x$ and nonstoichiometric disorder ( $\delta$ ) are presented. The coherence length of pair correlation $\xi$ and the product $k_F$ $\xi$ , where $k_F$ is the Fermi wave vector, are estimated. It is shown that for investigated single crystals parameter $k_F$ $\xi$ $\cong$ 100 and thus phenomenologically NdCeCuO - system is in a range of Cooper-pair-based (BCS) superconductivity.

Keywords

coherence length electron-doped superconductor NdCeCuO upper critical field BCS superconductivity Fermi wave vector

Cite

@article{arxiv.1010.4365,
  title  = {The estimation of coherence length for electron-doped superconductor Nd$_{2-x}$Ce$_x$CuO$_{4+\delta}$},
  author = {T. B. Charikova and G. I. Harus and N. G. Shelushinina and O. E. Sochinskaya},
  journal= {arXiv preprint arXiv:1010.4365},
  year   = {2015}
}

Comments

8 pages, 3 figures, 2 tables

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