Microwave nonlinear response of oxide superconducting films in the Berezinskii-Kosterlitz-Thouless state

Sergey Vitkalov; Scott Dietrich; William Mayer; Andrey Sergeev; Anthony T. Bollinger; Ivan Bozovic

doi:10.1117/12.2264369

24 February 2017 Microwave nonlinear response of oxide superconducting films in the Berezinskii-Kosterlitz-Thouless state

Sergey Vitkalov, Scott Dietrich, William Mayer, Andrey Sergeev, Anthony T. Bollinger, Ivan Bozovic

Author Affiliations +

Proceedings Volume 10105, Oxide-based Materials and Devices VIII; 101051S (2017) https://doi.org/10.1117/12.2264369
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

The effects of microwave radiation on transport properties of atomically thin superconducting La_2xSr_xCuO₄ films were studied in the 0.1 -13 GHz frequency range in the BKT state above T_c. The microwave nonlinear response is found to decrease by several orders of magnitude within a few GHz of the cutoff frequency f≈2 GHz. The results indicate that two-dimensional superconductivity is resilient against the high-frequency radiation, which is related to strong suppression of the dissociation of the vortex-antivortex pairs in 2D superconducting condensates oscillating at high frequencies.

Citation Download Citation

Sergey Vitkalov, Scott Dietrich, William Mayer, Andrey Sergeev, Anthony T. Bollinger, and Ivan Bozovic "Microwave nonlinear response of oxide superconducting films in the Berezinskii-Kosterlitz-Thouless state", Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 101051S (24 February 2017); https://doi.org/10.1117/12.2264369

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