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d-density wave state in an external magnetic field
S. G. Sharapov, V. P. Gusynin, H. Beck
We present a study of the electrical and thermal conductivities of the -density wave (DDW) state in an external magnetic field in the low temperature regime and in the prese…
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…
Thermal Conductivity in 3D NJL Model Under External Magnetic Field
E. J. Ferrer, V. P. Gusynin, V. de la Incera
The thermal conductivity of the (2+1)-dimensional NJL model in the presence of a constant magnetic field is calculated in the mean-field approximation and its different asymptotic…
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…
Quantum Phase Fluctuations Responsible for Pseudogap
V. P. Gusynin, V. M. Loktev, R. M. Quick +1
The effect of ordering field phase fluctuations on the normal and superconducting properties of a simple 2D model with a local four-fermion attraction is studied. Neglecting the co…
Phase fluctuations and Non-Fermi Liquid Properties of 2D Fermi-system with attraction
Valery P. Gusynin, Vadim M. Loktev, Rachel M. Quick +1
The effect of static fluctuations in the phase of the order parameter on the normal and superconducting properties of a 2D system with attractive four-fermion interaction has been…
Phase Fluctuations and Single Fermion Spectral Density in 2D Systems with Attraction
Valery P. Gusynin, Vadim M. Loktev, Sergei G. Sharapov
The effect of static fluctuations in the phase of the order parameter on the normal and superconducting properties of a 2D system with attractive four-fermion interaction is studie…
Pseudogap phase formation in the crossover from Bose-Einstein condensation to BCS superconductivity in low dimensional systems
Valery P. Gusynin, Vadim M. Loktev, Rachel M. Quick +1
A phase diagram for a 2D metal with variable carrier density has been studied using the modulus-phase representation for the order parameter in a fully microscopic treatment. This…
Pseudogap phase formation in the crossover from Bose-Einstein condensation to BCS superconductivity
Valery P. Gusynin, Vadim M. Loktev, Sergei G. Sharapov
A phase diagram for a 2D metal with variable carrier density has been derived. It consists of a normal phase, where the order parameter is absent; a so-called ``abnormal normal'' p…