The interplay of superconductivity and localization in Nd2-xCexCuO4+δ single crystal films

Harus, G. I.; Ponomarev, A. I.; Ignatenkov, A. N.; Charikova, T. B.; Sabirzyanova, L. D.; Shelushinina, N. G.; Elesin, V. F.; Ivanov, A. A.; Rudnev, I. A.

doi:10.1016/S0921-4534(02)01320-5

arXiv 2002-05-06 DOI 10.1016/S0921-4534(02)01320-5 0 مشاهدة

The interplay of superconductivity and localization in Nd2-xCexCuO4+δ single crystal films

Harus, G. I. · Ponomarev, A. I. · Ignatenkov, A. N. · Charikova, T. B. · Sabirzyanova, L. D. · Shelushinina, N. G. · Elesin, V. F. · Ivanov, A. A. · Rudnev, I. A.

Superconductivity

الأصل · EN

The influence of nonstoichiometric disorder on the in-plane resistivity and SC-transition has been investigated for Nd2-xCexCuO4+δ single crystal films (x=0.15 and 0.18). It is shown that with increasing of δ the in-plane normal state resistivity increases (the mean free path diminishes) and SC-transition temperature decreases with essential broadening of the transition region. The observed evolution from homogeneous metallic (and superconducting) Nd2-xCexCuO4+δ system to inhomogeneous dielectric one is described as Anderson-type disorder-induced transition in a two-dimensional electron system.

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