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Article
Open AccessMagnetofermionic condensate in two dimensions
Coherent condensate states of particles obeying either Bose or Fermi statistics are in the focus of interest in modern physics. Here we report on condensation of collective excitations with Bose statistics, cy...
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Article
Estimation of the thickness of graphite nanofilm on a silicon substrate by using energy dispersive X-ray analysis data
Energy-dispersive X-ray spectroscopy is applied to analyze composition and thickness of graphite nanofilm on a substrate. We estimate the thickness of graphite nanofilm on a silicon substrate using a simple eq...
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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...
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Article
Open AccessSuper-long life time for 2D cyclotron spin-flip excitons
An experimental technique for the indirect manipulation and detection of electron spins entangled in two-dimensional magnetoexcitons has been developed. The kinetics of the spin relaxation has been investigate...
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Article
Dipolar excitons indirect in real and momentum space in a GaAs/AlAs heterostructure
For a Schottky-diode structure containing two narrow GaAs (3.5 nm) and AlAs (5 nm) heterolayers, the photoluminescence properties of long-living dipolar excitons, indirect in both real and momentum space, are ...
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Article
Thin partially reduced oxide-graphene films: structural, optical, and electrical properties
High-resistive (1012 Ohm/□) oxide-graphene films with thickness varying from 5 nm to several micrometers were produced and studied. Films of 5–150 nm on glass had a transparency of 93–98% for wave-lengths of 400–...
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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...
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Article
Electro-optical trap for dipolar excitons
An electro-optical trap for spatially indirect dipolar excitons is implemented in a GaAs/AlAs Schottky diode with a 400-Å-wide GaAs single quantum well. In the presence of bias voltage applied to the gate, the...
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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...
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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...
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Article
A helium cryostat with pum** of 3He vapors for optical investigations
The construction of a helium cryostat with pum** of 3He vapors designed for optical measurements with a high spatial resolution in the temperature range 0.45–4.20 K. The cryostat is equipped with four windows m...
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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...
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Article
Magnetized spherical body rotation in plasma
The problem of isotropic plasma flow near a rotating magnetized ideally conducting spherical body has been numerically solved. The methods of lines and shooting have been used to construct the numerical soluti...
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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 ...
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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.
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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...
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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...
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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...
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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...
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Article
Bose condensation of interwell excitons in lateral traps: A phase diagram
The luminescence of interwell excitons in GaAs/AlGaAs double quantum wells (n-i-n heterostructures) containing large-scale random-potential fluctuations was studied. The study dealt with the properties of an exci...
