Frequency and temperature dependence of complex conductance of ultrathin YBa2Cu3O7-x films: A study of vortex-antivortex pair unbinding

Vitaly A. Gasparov; I. E. Batov; Qi Li; C. Kwon

doi:10.1016/S0921-4526(99)02364-9

Frequency and temperature dependence of complex conductance of ultrathin YBa₂Cu₃O_7-x films: A study of vortex-antivortex pair unbinding

Vitaly A. Gasparov, I. E. Batov, Qi Li, C. Kwon

Research output: Contribution to journal › Article

3 Scopus citations

Abstract

We have studied frequency and temperature dependences of complex sheet conductance of ultrathin (1-3 unit cell (UC) thick) YBa₂Cu₃O_7-x films using a radio frequency (1-20, 100-1000 MHz) sheet impedance and a microwave (30 GHz) loss measurements. We found the activated temperature dependence of the vortex diffusion constant and scaling behaviour of the universal ratio T_KTB^DC/L_k^-1(T_KTB) for 1UC, 2UC and 3UC YBCO films, in close agreement with theoretical prediction for vortex-antivortex unbinding transition.

Original language	English (US)
Pages (from-to)	1021-1022
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART I
DOIs	https://doi.org/10.1016/S0921-4526(99)02364-9
Publication status	Published - Jan 1 2000

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Cite this

Gasparov, V. A., Batov, I. E., Li, Q., & Kwon, C. (2000). Frequency and temperature dependence of complex conductance of ultrathin YBa₂Cu₃O_7-x films: A study of vortex-antivortex pair unbinding. Physica B: Condensed Matter, 284-288(PART I), 1021-1022. https://doi.org/10.1016/S0921-4526(99)02364-9

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10.1016/S0921-4526(99)02364-9