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Proceedings Paper

Experimental observation of Bose condensation in high-temperature superconductors
Author(s): Nikita P. Seregin; Pavel P. Seregin; Farit S. Nasredinov; Hazem M. Ali; Vladimir P. Volkov
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Paper Abstract

Emission Mossbauer spectroscopy on 67Cu (67Zn) and 67Ga (67Zn) isotopes was used to show that for the superconductors Nd1.85Ce0.15CuO4, La1.85Sr0.15CuO4, and Tl2Ba2Ca2CuO8 in the temperature range T > Tc the temperature dependence of the center of gravity S of the Mossbauer spectrum is determined by the Second-order Doppler shift, while in the range T < Tc the Bose condensation of Cooper pairs influences the value of S (here Tc is the superconducting transition temperature). The spatial non- uniformity produced in the electron density by a Bose condensate of Cooper pairs was observed for La1.85Sr0.15CuO4.

Paper Details

Date Published: 18 February 2002
PDF: 4 pages
Proc. SPIE 4627, Fifth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (18 February 2002); doi: 10.1117/12.456246
Show Author Affiliations
Nikita P. Seregin, St. Petersburg State Technical Univ. (Russia)
Pavel P. Seregin, St. Petersburg State Technical Univ. (Russia)
Farit S. Nasredinov, St. Petersburg State Technical Univ. (Russia)
Hazem M. Ali, St. Petersburg State Technical Univ. (Russia)
Vladimir P. Volkov, St. Petersburg State Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 4627:
Fifth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering

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