4 papers
Ordered states of undoped AB bilayer graphene: bias induced cascade of transitions
A. V. Rozhkov, A. O. Sboychakov, A. L. Rakhmanov
Using mean-field theory, we determine the electronic phase diagram of undoped AB-stacked bilayer graphene in the presence of a transverse electric field. In addition to multiple co…
Nesting-driven ferromagnetism of itinerant electrons
Ya. I. Rodionov, A. V. Rozhkov, M. E. S. Beck +3
We theoretically investigate a model with electrons and holes whose Fermi surfaces are perfectly nested. The fermions are assumed to be interacting, both with each other and with t…
Anomalous superconductivity and unusual normal state properties of bilayer and twisted graphene (Brief review)
M. Yu. Kagan, M. M. Korovushkin, V. A. Mitskan +4
It has been shown that the Kohn--Luttinger superconductivity mechanism interplaying with other types of ordering can be implemented in systems with a hexagonal lattice. A number of…
Umklapp-driven first-order transition into a charge-density wave phase
A. V. Rozhkov
Using phenomenological Landau free energy, we systematically analyze influence of so-called umklapp contributions on the phase diagram of a solid hosting a commensurate charge-dens…