Alexandr V. Rozhkov

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Tight-binding calculations predict that the AA-stacked bilayer graphene has one electron and one hole conducting band, and that the Fermi surfaces of these bands coincide. We demonstrate that as a result of this degeneracy, the bilayer becomes unstable with respect to a set of spontaneous symmetry violations. Which of the symmetries is broken depends on the(More)
A. O. Sboychakov,1,2 A. V. Rozhkov,1,2 K. I. Kugel,1,2 A. L. Rakhmanov,1,2,3 and Franco Nori2,4 1Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, Moscow, 125412 Russia 2CEMS, RIKEN, Saitama, 351-0198, Japan 3Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow Region, 141700 Russia 4Department of Physics,(More)
A. O. Sboychakov,1,2 A. L. Rakhmanov,1,2,3 A. V. Rozhkov,1,2 and Franco Nori1,4 1Advanced Science Institute, RIKEN, Wako-shi, Saitama, 351-0198, Japan 2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia 3Moscow Institute for Physics and Technology (State University), 141700 Moscow Region, Russia(More)
R. S. Akzyanov,1,2,3 A. O. Sboychakov,2,4 A. V. Rozhkov,1,2,4 A. L. Rakhmanov,1,2,3,4 and Franco Nori4,5 1Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141700 Russia 2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, Moscow, 125412 Russia 3All-Russia Research Institute of Automatics, Moscow, 127055(More)
A. O. Sboychakov,1,2 A. V. Rozhkov,1,2 A. L. Rakhmanov,1,2,3 and Franco Nori1,4 1Center for Emergent Matter Science, RIKEN, Saitama 351-0198, Japan 2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia 3Moscow Institute of Physics and Technology, Dolgoprudnyi 141700, Russia 4Department of Physics,(More)
A. L. Rakhmanov,1,2,3 A. V. Rozhkov,1,2 A. O. Sboychakov,1,2 and Franco Nori1,4 1Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198, Japan 2Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia 3Moscow Institute for Physics and Technology (State University), 141700 Moscow Region, Russia(More)
A. V. Rozhkov1,2 and Franco Nori2,3 1Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow, Russia 2Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan 3Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109-1040, USA Received(More)
The electronic properties of a graphene sheet with attached hydrogen atoms are studied using a modified Falicov-Kimball model on the honeycomb lattice. It is shown that in the ground state this system separates into two phases: fully hydrogenated graphene (graphane) and hydrogen-free graphene. The graphene-graphane boundary acquires a positive interface(More)