Abstract
It has been shown that temperature dependences of the gravity centres of67Cu(67Zn) and67Ga(67Zn) emission Mössbauer spectra of Nd1.85Ce0.15CuO4,La1.85Sr0.15CuO4 and Tl2Ba2Ca2CuO8 superconductors are described by thesecond-order Doppler shift in the temperature range T ≥Tc, andBose condensation of Cooper pairs should be taken into account at T ≤Tc (Tc isthe superconducting transition temperature). The spatial nonuniformity of theelectron density created by the Bose condensate has been observed inLa1.85Sr0.15CuO4.
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Schedule a callMore From: Journal of physics. Condensed matter : an Institute of Physics journal
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