Short-wavelength cutoff effects in the ac fluctuation conductivity of superconductors (CROSBI ID 99442)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Peligrad, Dragos-N. ; Mehring, Michael ; Dulčić, Antonije
engleski
Short-wavelength cutoff effects in the ac fluctuation conductivity of superconductors
The short-wavelength cutoff has been introduced in the calculation of the ac fluctuation conductivity of superconductors. It is shown that a finite cutoff leads to a breakdown of the scaling property in frequency and temperature. Also, it increases the phase of the complex conductivity (tan = 2/1) beyond /4 at Tc. Detailed expressions containing all essential parameters are derived for three-dimensional isotropic and anisotropic fluctuation conductivity. In the two-dimensional case we obtain individual expressions for the fluctuation conductivity for each term in the sum over discrete wave vectors perpendicular to the film plane. A comparison of the theory to the experimental microwave fluctuation conductivity is provided.
superconductivity ; fluctuations ; microwave conductivity
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Podaci o izdanju
67 (17)
2003.
174515
13
objavljeno
1098-0121
1550-235X
10.1103/PhysRevB.67.174515