59 citations · 312 across the 40 of their papers we have counts for
20 papers · 1 filter
Stationary waves in a superfluid gas of electron-hole pairs in bilayers
D. V. Fil, S. I. Shevchenko
Stationary waves in the condensate of electron-hole pairs in the bilayer system are studied. The system demonstrates the transition from a uniform (superfluid) to a nonunifor…
Transition to a supersolid phase in a two-dimensional dilute gas of electron-hole pairs
D. V. Fil, S. I. Shevchenko
Using coherent-state formalism (the Keldysh formalism), the article describes a transition from a homogeneous superfluid state to a supersolid state in a two-dimensional dilute gas…
Nonlinear electromagnetic response of few-layer graphene: A nonperturbative description
D. V. Fil
Nonperturbative approach based on exact solution of Boltzmann kinetic equation in the relaxation time approximation is developed for the study of nonlinear response of electron-dop…
Anderson-Bogoliubov and Carlson-Goldman modes in counterflow superconductors: Case study of a double monolayer graphene
K. V. Germash, D. V. Fil
The impact of electron-hole pairing on the spectrum of plasma excitations in double layer systems is investigated. The theory is developed with reference to a double monolayer grap…
Superfluidity of a rarefied gas of electron-hole pairs in a bilayer system
D. V. Fil, S. I. Shevchenko
The conditions of stability of the superfluid phase in double layer systems with pairing of spatially separated electrons and holes in the low density limit are studied. The genera…
Electromagnetic properties of a double layer graphene system with electron-hole pairing
K. V. Germash, D. V. Fil
We study electromagnetic properties of a double layer graphene system in which electrons from one layer are coupled with holes from the other layer. The gauge invariant linear resp…
Diamagnetism and suppression of screening as hallmarks of electron-hole pairing in a double layer graphene system
K. V. Germash, D. V. Fil
We study how the electron-hole pairing reveals itself in the response of a double layer graphene system to the vector and scalar potentials. Electron-hole pairing results in a rigi…
Electron-hole pairing in topological insulator heterostructures in the quantum Hall state
K. V. Germash, D. V. Fil
A thin film of a topological insulator (TI) on a dielectric substrate and a bulk TI - dielectric film - bulk TI structure are considered as natural double-well heterostructures sui…
Graphene Bilayer Structures with Superfluid Magnetoexcitons
A. A. Pikalov, D. V. Fil
We study superfluid behavior of a gas of spatially indirect magnetoexcitons with reference to a system of two graphene layers embedded in a multilayer dielectric structure. The sys…
Locking and unlocking of the counterflow transport in nu=1 quantum Hall bilayers by tilting of magnetic field
D. V. Fil
The counterflow transport in quantum Hall bilayers provided by superfluid excitons is locked at small input currents due to a complete leakage caused by the interlayer tunneling. W…
Critical currents and giant non-dissipative drag for superfluid electron-hole pairs in quantum Hall multilayers
L. Yu. Kravchenko, D. V. Fil
Superfluid properties of electron-hole pairs in a quantum Hall four-layer system are investigated. The system is considered as a solid state realization of a two-component superflu…
Josephson vortex motion as a source for dissipation of superflow of e-h pairs in bilayers
D. V. Fil, S. I. Shevchenko
IIt is shown that in a bilayer excitonic superconductor dissipative losses emerge under transmission of the current from the source to the load. These losses are proportional to th…
Charge ordering and interlayer phase coherence in quantum Hall superlattices
S. I. Shevchenko, D. V. Fil, A. A. Yakovleva
The possibility of the existence of states with a spontaneous interlayer phase coherence in multilayer electron systems in a high perpendicular to the layers magnetic field is inve…
Piezoelectric mechanism for the orientational pinning of bilayer Wigner crystals and stripes in a GaAs matrix
D. V. Fil
We investigate the phonon mechanism for the orientational pinning of Wigner crystals and stripes in two-dimensional electron layers in GaAs matrices. We find the orientation of bil…
On the role of electron-phonon interaction in the resistance anisotropy of two-dimensional electrons in GaAs heterostructures
D. V. Fil
A contribution of the electron-phonon interaction into the energy of a unidirectional charge ordered state (stripe phase) of two-dimensional electrons in GaAs heterostructures is a…
Piezoelectric mechanism of orientation of a bilayer Wigner crystal in a GaAs matrix
D. V. Fil
A mechanism for orientation of bilayer classical Wigner crystals in a piezoelectric medium is considered. For the GaAs system the piezoelectric correction to the electrostatic inte…
Piezoelectric mechanism of orientation of stripe structures in two-dimensional electron systems
D. V. Fil
A piezoelectric mechanism of orientation of stripes in two-dimensional quantum Hall systems in GaAs heterostructures is considered. The anisotropy of the elastic moduli and the bou…
Interaction of nonuniform elastic waves with two-dimensional electrons in AlGaAs-GaAs-AlGaAs heterostructures
D. V. Fil
An interaction of a double layer electron system realized in an AlGaAs-GaAs-AlGaAs heterostructure with nonuniform elastic modes localized in the GaAs layer is considered. The depe…
Interaction of quantum Hall systems with waveguide elastic modes
D. V. Fil
An interaction of non-uniform plane elastic modes of the waveguide type with monolayer and double-layer quantum Hall systems is considered. It is shown, that unlike the case of the…
Screening of electrostatic potential in a composite fermion system
D. V. Fil
Screening of the electric field of a test charge by monolayer and double-layer composite fermion systems is considered. It is shown that the electric field of the test charge is pa…