TY - GEN
T1 - Temperature and frequency dependence of complex conductance of ultrathin YBa2Cu3O7-x films
T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
AU - Gasparov, V. A.
AU - Tsydynzhapov, G. E.
AU - Batov, I. E.
AU - Li, Qi
PY - 2006
Y1 - 2006
N2 - We have studied the temperature dependencies of the complex sheet conductance, σ(ω,T), of 1-3 unit cell (UC) thick YBa 2Cu3O7-x films sandwiched between semiconducting Pr0.6Y0.4Ba2Cu3 O7-x layers at high frequencies. We have found: (i) quadratic temperature dependence of the kinetic inductance, Lk-1(T), with a break in slope at TdcBKT, (ii) the maximum of real part of conductance and large shift of the onset temperature and the peak of ωσ-1(T) to higher temperatures with increasing ω. We obtain the universal ratio TdcBKT/L k-1(TdcBKT)=25, 25, and 17 nH K for 1, 2 and 3-UC films, respectively in relation with theoretical prediction of 12 nH K for vortex-antivortex unbinding transition.
AB - We have studied the temperature dependencies of the complex sheet conductance, σ(ω,T), of 1-3 unit cell (UC) thick YBa 2Cu3O7-x films sandwiched between semiconducting Pr0.6Y0.4Ba2Cu3 O7-x layers at high frequencies. We have found: (i) quadratic temperature dependence of the kinetic inductance, Lk-1(T), with a break in slope at TdcBKT, (ii) the maximum of real part of conductance and large shift of the onset temperature and the peak of ωσ-1(T) to higher temperatures with increasing ω. We obtain the universal ratio TdcBKT/L k-1(TdcBKT)=25, 25, and 17 nH K for 1, 2 and 3-UC films, respectively in relation with theoretical prediction of 12 nH K for vortex-antivortex unbinding transition.
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U2 - 10.1063/1.2354794
DO - 10.1063/1.2354794
M3 - Conference contribution
AN - SCOPUS:33947515596
SN - 0735403473
SN - 9780735403475
T3 - AIP Conference Proceedings
SP - 481
EP - 482
BT - LOW TEMPERATURE PHYSICS
Y2 - 10 August 2006 through 17 October 2006
ER -