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- Dmitrii V Fil, S. I. Shevchenko
- Journal of physics. Condensed matter : an…
- 2009

It 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 the square of the interlayer tunneling amplitude and are independent of the value of the input current. The case of a quantum Hall bilayer is considered. The bilayer may work as a… (More)

The possibility of realization of a superfluid state of bound electron-hole pairs (magnetoexcitons) with spatially separated components in a graphene double layer structure (two graphene layers separated by a dielectric layer) subjected by a strong perpendicular to the layers magnetic field is analyzed. We show that the superfluid state of magnetoexcitons… (More)

- L Yu Kravchenko, Dmitrii V Fil
- 2008

On the ground of the Landau criterion we study the behavior of critical velocities in a superfluid two-component Bose gas. It is found that under motion of the components with different velocities the velocity of each component should not be lower than a minimum phase velocity of elementary excitations (s −). The Landau criterion yields a relation between… (More)

- L Yu Kravchenko, Dmitrii V Fil
- 2009

A stationary wave pattern occurring in a flow of a two-component Bose-Einstein condensate past an obstacle is studied. We consider the general case of unequal velocities of two superfluid components. The Landau criterium applied to the two-component system determines a certain region in the velocity space in which superfluidity may take place. Stationary… (More)

- Dmitrii V Fil
- 2002

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 bilayer Wigner crystals on the (001), (111), (01̄1) and (311) interfaces versus the interlayer distance and determine the regions of parameters, where polydomain structures can… (More)

- Alexandr A Pikalov, Dmitrii V Fil
- Journal of physics. Condensed matter : an…
- 2011

Stationary waves in a superfluid magnetoexciton gas in ν = 1 quantum Hall bilayers are considered. The waves are induced by counterpropagating electrical currents that flow in a system with a point obstacle. It is shown that stationary waves can emerge only in imbalanced bilayers in a certain diapason of currents. It is found that the stationary wave… (More)

- V. D. Fil, Dmitrii V Fil, Yu. A. Avramenko, Alexander Gaiduk, W. Lewis Johnson
- 2005

V. D. Fil,1 D. V. Fil,2,3 Yu. A. Avramenko,1 A. L. Gaiduk,1 and W. L. Johnson4 1B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Lenin av. 47, Kharkov 61103, Ukraine 2Institute for Single Crystals, National Academy of Sciences of Ukraine, Lenin av. 60, Kharkov 61001, Ukraine 3Ukrainian State Academy… (More)

- Alexandr A Pikalov, Dmitrii V Fil
- Nanoscale research letters
- 2012

In this article, 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 system is considered as an alternative of a double quantum well in a GaAs heterostructure. We determine a range of parameters (interlayer distance, dielectric… (More)

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