18 February 2002 Experimental observation of Bose condensation in high-temperature superconductors
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Proceedings Volume 4627, Fifth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2002) https://doi.org/10.1117/12.456246
Event: Fifth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2001, St. Petersburg, Russian Federation
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.
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Nikita P. Seregin, Nikita P. Seregin, Pavel P. Seregin, Pavel P. Seregin, Farit S. Nasredinov, Farit S. Nasredinov, Hazem M. Ali, Hazem M. Ali, Vladimir P. Volkov, Vladimir P. Volkov, } "Experimental observation of Bose condensation in high-temperature superconductors", Proc. SPIE 4627, Fifth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (18 February 2002); doi: 10.1117/12.456246; https://doi.org/10.1117/12.456246
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