TY - JOUR
T1 - Frequency and temperature dependence of complex conductance of ultrathin YBa2Cu3O7-x films
T2 - A study of vortex-antivortex pair unbinding
AU - Gasparov, Vitaly A.
AU - Batov, I. E.
AU - Li, Qi
AU - Kwon, C.
N1 - Funding Information:
This work was partially supported by NSF Grant No. DMR-9876266, Russian Council on High- T c Superconductivity (Volna 4G), Civilian Research and Development Foundation (RE1-356), and National Research Council COBASE Program.
PY - 2000
Y1 - 2000
N2 - We have studied frequency and temperature dependences of complex sheet conductance of ultrathin (1-3 unit cell (UC) thick) YBa2Cu3O7-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 TKTBDC/Lk-1(TKTB) for 1UC, 2UC and 3UC YBCO films, in close agreement with theoretical prediction for vortex-antivortex unbinding transition.
AB - We have studied frequency and temperature dependences of complex sheet conductance of ultrathin (1-3 unit cell (UC) thick) YBa2Cu3O7-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 TKTBDC/Lk-1(TKTB) for 1UC, 2UC and 3UC YBCO films, in close agreement with theoretical prediction for vortex-antivortex unbinding transition.
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U2 - 10.1016/S0921-4526(99)02364-9
DO - 10.1016/S0921-4526(99)02364-9
M3 - Article
AN - SCOPUS:0033726110
VL - 284-288
SP - 1021
EP - 1022
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - PART I
ER -