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6 papers · 1 filter
The Kohn-Luttinger effect and anomalous pairing in new superconducting systems and graphene
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
We present a review of theoretical investigations into the Kohn-Luttinger nonphonon superconductivity mechanism in various 3D and 2D repulsive electron systems described by the Fer…
Wannier-Stark states in double-periodic lattices II: two-dimensional lattices
E. N. Bulgakov, D. N. Maksimov, A. R. Kolovsky
We analyze the Wannier-Stark spectrum of a quantum particle in tilted two-dimensional lattices with the Bloch spectrum consisting of two subbands, which could be either separated b…
Effect of long-range interactions on the Kohn-Luttinger mechanism of the Cooper instability in the Shubin-Vonsowsky model
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
The problem of Cooper instability is studied by implementing the Kohn-Luttinger mechanism in the framework of the Shubin-Vonsowsky model taking into account the intersite Coulomb i…
The Kohn-Luttinger superconductivity in idealized doped graphene
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
Idealized graphene monolayer is considered neglecting the van der Waals potential of the substrate and the role of the nonmagnetic impurities. The effect of the long-range Coulomb…
Wannier-Stark states in double-periodic lattices I: one-dimensional lattices
D. N. Maksimov, E. N. Bulgakov, A. R. Kolovsky
We analyze the Wannier-Stark spectrum of a quantum particle in generic one-dimensional double-periodic lattices. In the limit of weak static field the spectrum is shown to be a sup…
d-Wave Pairing in an Ensemble of Spin Polaron Quasiparticles in the Spin-Fermion Model of the Electronic Structure of the CuO2 Plane
V. V. Val'kov, D. M. Dzebisashvili, A. F. Barabanov
It is demonstrated for the first time that the strong coupling between spin moments of copper ions and oxygen holes, which arises upon hybridazation mixing of two hole subsystems i…