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cond-mat.supr-con2002★ 90 cited
Effective action approach to the Leggett's mode in two-band superconductors
S. G. Sharapov, V. P. Gusynin, H. Beck
We investigate a collective excitation (Leggett's mode) corresponding to small fluctuations of the relative phase of two condensates in two-band superconductor using the effective…
cond-mat.supr-con2002★ 6 cited
Low temperature superfluid stiffness of d-wave superconductor in a magnetic field
S. G. Sharapov, V. P. Gusynin, H. Beck
The temperature and field dependence of the superfluid density in the vortex state of a d-wave superconductor are calculated using a microscopic model in the quasiclassical a…
cond-mat.supr-con1996★ 8 cited
Some Global Properties of the Attractive Hubbard Model in the Superconducting Phase: T-Matrix Approximation in 2D
S. Schafroth, J. J. Rodriguez, H. Beck
We have applied the Fast Fourier transform (FFT), which allows to compute efficiently convolution sums, to solve the set of self-consistent T-matrix equations to get the Green func…