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  1. Article

    Open Access

    Spatial Spreading of the Condensate of Magnetoexcitons in a Quantum Hall Insulator

    The spatial spreading of a dense ensemble of spin cyclotron magnetoexcitons in a quantum Hall insulator at the filling factor ν = 2 is visualized using an optical system with a high aperture ratio. It is found...

    A. V. Gorbunov, A. V. Larionov, L. V. Kulik, V. B. Timofeev in JETP Letters (2022)

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    Article

    Magnetoexciton Condensate in a Hall Dielectric

    A review of experimental studies of the properties of a recently discovered new coherent collective state, a magnetoexciton condensate, is presented. Condensation occurs at temperatures below 1 K in a Fermi sy...

    A. V. Gorbunov, V. B. Timofeev in Journal of Experimental and Theoretical Physics (2022)

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    Article

    Coherence of a Magnetoexciton Condensate in a Quantum Hall Insulator

    The coherent properties of a dense ensemble of triplet cyclotron magnetoexcitons in a quantum Hall insulator near the filling factor $$\nu = 2...

    A. V. Gorbunov, A. V. Larionov, L. V. Kulik, V. B. Timofeev in JETP Letters (2021)

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    Article

    Thermalization and Transport in Dense Ensembles of Triplet Magnetoexcitons

    In a dilute gas of triplet magnetoexcitons, complete thermalization does not occur because the energy and momentum cannot be conserved simultaneously. Relaxation to the lowest energy state becomes possible owi...

    A. S. Zhuravlev, V. A. Kuznetsov, A. V. Gorbunov, L. V. Kulik… in JETP Letters (2019)

  5. No Access

    Article

    Detection of spin excitation transfer in a two-dimensional electron system via photoluminescence of multiparticle exciton complexes

    The possibility of creating dense ensembles of spin excitons, transferring them to macroscopic distances on the order of hundreds of microns, and recording the appearance of these excitons in the region spatia...

    A. V. Gorbunov, L. V. Kulik, V. A. Kuznetsov, A. S. Zhuravlev… in JETP Letters (2017)

  6. No Access

    Article

    Long-lived two-dimensional triplet magnetoexcitons in a Hall insulator

    An experimental technique is developed to perform photoexcitation of an ensemble of translationinvariant triplet excitons, to manipulate this ensemble, and to detect the properties of its components. In partic...

    L. V. Kulik, A. V. Gorbunov, A. S. Zhuravlev… in Journal of Experimental and Theoretical Ph… (2016)

  7. No Access

    Article

    Dipolar excitons in a potential trap in a magnetic field

    The conditions for observing the Zeeman spin splitting compensation in an exciton Bose gas have been investigated. The magnetoluminescence of spatially indirect, dipolar excitons in a 25-nm-wide GaAs/AlGaAs qu...

    A. V. Gorbunov, V. B. Timofeev in Journal of Experimental and Theoretical Physics (2014)

  8. No Access

    Article

    Phase diagram of the bose condensation of dipolar excitons in GaAs/AlGaAs quantum-well heterostructures

    Experimental studies of the phase diagram of Bose condensation in a system of spatially indirect dipolar excitons in GaAs/AlGaAs quantum wells are reviewed. The properties of spatially periodic patterns arisin...

    A. V. Gorbunov, V. B. Timofeev in JETP Letters (2012)

  9. No Access

    Article

    Electro-optical trap for dipolar excitons in a GaAs/AlAs Schottky diode with a single quantum well

    An electro-optical trap for spatially indirect dipolar excitons has been implemented in a GaAs/AlAs Schottky diode with a 400-Å-wide single quantum well. In the presence of a bias voltage applied to a gate, th...

    A. V. Gorbunov, V. B. Timofeev, D. A. Demin in JETP Letters (2012)

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    Article

    Two-photon correlations of luminescence at the Bose-Einstein condensation of dipolar excitons

    Correlations of the luminescence intensity (the second-order correlation function g (2)(τ)), where τ is the delay time between the photons detected in pairs) under the conditions of the Bo...

    A. V. Gorbunov, V. B. Timofeev, D. A. Demin, A. A. Dremin in JETP Letters (2009)

  11. No Access

    Article

    Linear polarization of luminescence in Bose-Einstein condensation of indirect excitons and spontaneous symmetry breaking

    The linear polarization of luminescence from the Bose-Einstein condensate of dipolar (indirect) excitons accumulated in the ring lateral traps in GaAs/AlGaAs Schottky-diode heterostructures with a wide single ...

    A. V. Gorbunov, V. B. Timofeev in JETP Letters (2008)

  12. No Access

    Article

    Luminescence kinetics of dipolar excitons in circular traps

    The kinetics of the luminescence spectra of dipolar excitons accumulated in circular traps under pulsed off-resonance laser photoexcitation is investigated. The temperature of the exciton gas is determined.

    A. V. Gorbunov, A. V. Larionov, V. B. Timofeev in JETP Letters (2007)

  13. No Access

    Article

    Large-scale coherence of the bose condensate of spatially indirect excitons

    The Bose condensation of spatially indirect (dipolar) excitons in a wide single quantum well in an electric field transverse to the heterolayers is analyzed. Voltage is applied between a metallic film on the s...

    A. V. Gorbunov, V. B. Timofeev in JETP Letters (2006)

  14. No Access

    Article

    Collective state in a bose gas of interacting interwell excitons

    Experiments associated with direct observations of a collective state in a gas of interacting interwell excitons in GaAs/AlGaAs double quantum wells are discussed. The structures constitute Schottky photodiode...

    A. V. Gorbunov, V. B. Timofeev in Journal of Experimental and Theoretical Physics Letters (2006)

  15. No Access

    Article

    Temperature dependence of luminescence intensity under Bose condensation of interwell excitons

    Photoluminescence of interwell excitons in GaAs/AlGaAs double quantum wells (n-i-n heterostructure) containing large-scale random potential fluctuations in the planes of heteroboundaries is studied. The propertie...

    A. V. Gorbunov, V. E. Bisti, V. B. Timofeev in Journal of Experimental and Theoretical Ph… (2005)

  16. No Access

    Article

    Interwell excitons in a lateral potential well in an inhomogeneous electric field

    The luminescence of interwell excitons in double quantum wells based on GaAs/AlGaAs semiconductor heterostructures (n-i-n structures) in a lateral trap prepared with the use of an inhomogeneous electric field was...

    A. V. Gorbunov, V. B. Timofeev in Journal of Experimental and Theoretical Physics Letters (2004)

  17. No Access

    Article

    Phase diagram of the Bose condensation of interwell excitons in GaAs/AlGaAs double quantum wells

    The luminescence of interwell excitons in GaAs/AlGaAs double quantum wells (n-i-n heterostructures) with large-scale fluctuations of random potential in the heteroboundary planes was studied at low temperatures d...

    A. A. Dremin, V. B. Timofeev, A. V. Larionov… in Journal of Experimental and Theoretical Ph… (2002)

  18. No Access

    Article

    Bose condensation of interwell excitons in double quantum wells

    The luminescence of interwell excitons in double quantum wells GaAs/AlGaAs (n-i-n heterostructures) with large-scale fluctuations of random potential in the heteroboundary planes was studied. The properties of ex...

    A. V. Larionov, V. B. Timofeev, P. A. Ni… in Journal of Experimental and Theoretical Ph… (2002)

  19. No Access

    Article

    Collective state of interwell excitons in GaAs/AlGaAs double quantum wells under pulse resonance excitation

    The time evolution and kinetics of photoluminescence (PL) spectra of interwell excitons in double GaAs/AlGaAs quantum wells (n-i-n structures) have been investigated under the pulse resonance excitation of intraw...

    A. V. Larionov, V. B. Timofeev, J. Hvam… in Journal of Experimental and Theoretical Ph… (2002)

  20. No Access

    Article

    Condensation of interwell excitons in GaAs/AlGaAs double quantum wells

    Experimental observations of the collective behavior of interwell excitons in the binary quantum wells with inclined bands under bias are discussed.

    A. V. Larionov, V. B. Timofeev in Journal of Experimental and Theoretical Physics Letters (2001)

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