Temperature dependence of the optical conductivity and penetration depth in superconductor MgB2 film

2010 ◽  
Vol 405 (1) ◽  
pp. 258-262 ◽  
Author(s):  
M. Moarrefi ◽  
H. Yavari ◽  
M. Elahi
Keyword(s):  
Temperature Dependence ◽  
Penetration Depth ◽  
Optical Conductivity ◽  
Mgb2 Film

Temperature dependence of the magnetic penetration depth in Nb, NbCN and YBa2Cu3O7-δ thin films

1991 ◽  
Vol 169 (1-4) ◽  
pp. 671-672 ◽  
Author(s):  
S.M. Anlage ◽  
B.W. Langley ◽  
G. Deutscher ◽  
R.W. Simon ◽  
J.M. Murduck ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Penetration Depth ◽  
Magnetic Penetration Depth ◽  
Magnetic Penetration

Temperature dependence of the magnetic penetration depth in the high-TcsuperconductorBa2YCu3O9−δ: Evidence for conventionals-wave pairing

1987 ◽  
Vol 36 (4) ◽  
pp. 2386-2389 ◽  
Author(s):  
D. R. Harshman ◽  
G. Aeppli ◽  
E. J. Ansaldo ◽  
B. Batlogg ◽  
J. H. Brewer ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Penetration Depth ◽  
Magnetic Penetration Depth ◽  
Wave Pairing ◽  
Magnetic Penetration

Optical Absorptions in Metal Sodium: The Temperature Dependence in the Liquid State

1974 ◽  
Vol 29 (3) ◽  
pp. 462-468
Author(s):  
N. C. Haider
Keyword(s):  
Perturbation Theory ◽  
Solid State ◽  
Temperature Dependence ◽  
Electron Density ◽  
Electron Energy ◽  
Density Of States ◽  
Optical Conductivity ◽  
Liquid State ◽  
Present Calculation ◽  
Electron Density Of States

The temperature dependence of optical absorptions in liquid Na is calculated. The electron energy values are obtained to second order in perturbation theory which are then used to determine the electron density of states. The density of states plots show some structure similar to those noted in the solid state. The optical conductivity in the liquid state is found to increase with the temperature as in the solid state. The present calculation for the optical conductivity gives a rather sharp peak around ħ ω = 1.7 eV. These results are in better agreement with the existing experimental results

Magnetic Penetration Depth Measurements and Inhomogeneity in YBa2Cu3O7−δ Superconducting Thin Films

1990 ◽  
Vol 195 ◽  
Author(s):  
Steven M. Anlage ◽  
Brian W. Langley ◽  
Jurgen Halbritter ◽  
Chang-Beom Eom ◽  
Neil Switz ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Penetration Depth ◽  
Exponential Decay ◽  
Power Law ◽  
Low Temperatures ◽  
Bcs Theory ◽  
Magnetic Penetration Depth ◽  
Microstrip Resonator ◽  
Magnetic Penetration

ABSTRACTThe microstrip resonator technique has been applied to study the temperature dependence of the magnetic penetration depth in high quality YBa2Cu3O7−δ thin films. The temperature dependence at low temperatures comes out directly from measured data, with no assumptions about transmission line geometry, dielectric properties, or a model for the temperature dependence of the penetration depth. One can interpret the data in terms of either an exponential decay of λ(T) at low temperatures or as a power law decay. The energy gaps obtained from the exponential decay at low temperature are found to be significantly smaller than weak coupled BCS theory and power-law exponents are in the range of 1.3 to 3.2. These results will be discussed in terms of microscopic theories and the possibility that materials properties dominate the measurement.

Temperature Dependence of Penetration Depth of a Magnetic Field in Superconductors

1948 ◽  
Vol 74 (7) ◽  
pp. 842-842 ◽  
Author(s):  
J. G. Daunt ◽  
A. R. Miller ◽  
A. B. Pippard ◽  
D. Shoenberg
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Penetration Depth
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