Experimental observation of Bose condensation in high-temperature superconductors

Nikita P. Seregin; Pavel P. Seregin; Farit S. Nasredinov; Hazem M. Ali; Vladimir P. Volkov

doi:10.1117/12.456246

18 February 2002 Experimental observation of Bose condensation in high-temperature superconductors

Nikita P. Seregin, Pavel P. Seregin, Farit S. Nasredinov, Hazem M. Ali, Vladimir P. Volkov

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 Nd_1.85Ce_0.15CuO₄, La_1.85Sr_0.15CuO₄, and Tl₂Ba₂Ca₂CuO₈ in the temperature range T > T_c 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 < T_c the Bose condensation of Cooper pairs influences the value of S (here T_c is the superconducting transition temperature). The spatial non- uniformity produced in the electron density by a Bose condensate of Cooper pairs was observed for La_1.85Sr_0.15CuO₄.

Citation Download Citation

Nikita P. Seregin, Pavel P. Seregin, Farit S. Nasredinov, Hazem M. Ali, and 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); https://doi.org/10.1117/12.456246

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