4 papers
Appearance of Fermion Condensate in Fermi Liquids
V. R. Shaginyan
The appearance of the fermion condensation, which can be compared to the Bose-Einstein condensation, in high-T_c metals, heavy-fermion metals and in other liquids is considered, it…
Fermions under strong repulsion: from multiconnected Fermi surfaces to Fermi condensation
Yu. G. Pogorelov, V. R. Shaginyan
We consider a system of fermions with mass m and model repulsive interaction U(q) = g/\sqrt{q^2 + q_0^2}, where q is the momentum transfer, q_0 the screening constant, and g > 0 th…
Appearance of Fermion Condensation Quantum Phase Transition in Different Fermi Liquids
V. R. Shaginyan
We show that the quasiparticle effective mass diverges as a function of the system's density , , when a system approaches the critical point $x_{F…
Model of Strongly Correlated 2D Fermi Liquids Based on Fermion-Condensation Quantum Phase Transition
V. R. Shaginyan
A theory of strongly correlated electron or hole liquids with the fermion condensate is presented and applied to the consideration of quasiparticle excitations in high temperature…