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 +1

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. Th…