21 citations · 166 across the 22 of their papers we have counts for
22 papers
Effect of electric current on optical response of viscous electron-hole plasma
Yu. A. Pusep, M. A. T. Patricio, G. M. Jacobsen +3
The influence of the Hall voltage on the photoluminescence of a dense hydrodynamic electron-hole plasma laser generated in a mesoscopic n-doped GaAs channel under intense laser exc…
Spectroscopy of Heat Transport and Violation of the Wiedemann--Franz Law in a GaAs Hydrodynamic Mesoscopic Channel
Yu. A. Pusep, M. A. T. Patricio, M. M. Glazov +5
The Wiedemann--Franz law, which determines the universality of the ratio of thermal conductivity to electrical conductivity, is studied in the hydrodynamic electron transport regim…
Viscous Electron Flow and Nonlinear Magnetotransport in 2D Channels
A. D. Levin, G. M. Gusev, A. K. Bakarov
We examine nonlinear transport in a viscous two-dimensional electron fluid within narrow GaAs channels. The differential magnetoresistance shows nonmonotonic behavior, a signature…
Current-induced Magnetoexcitons in Mesoscopic Electron-hole Plasma
Yu. A. Pusep, M. A. T. Patricio, G. M. Jacobsen +3
A radical restructuring of the optical response of highly excited electron-hole plasma formed in a mesoscopic GaAs/AlGaAs channel in a quantizing magnetic field when an electric cu…
Bulk and shear viscosities in multicomponent 2D electron system
A. D. Levin, G. M. Gusev, V. A. Chitta +2
We investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetore…
Hydrodynamics of electron-hole fluid photogenerated in a mesoscopic two-dimensional channel
M. A. T. Patricio, G. M. Jacobsen, M. D. Teodoro +3
The dynamics of the diffusion flow of holes photoinjected into a mesoscopic GaAs channel of variable width, where they, together with background electrons, form a hydrodynamic elec…
Geometric engineering of viscous magnetotransport in a two-dimensional electron system
A. D. Levin, G. M. Gusev, A. S. Yaroshevich +2
In this study, we present our experimental investigation on the magnetotransport properties of a two-dimensional electron system in GaAs quantum wells utilizing a variety of device…
Quantum transport of Dirac fermions in HgTe gapless quantum wells
G. M. Gusev, A. D. Levin, D. A. Kozlov +2
We study transport properties of HgTe quantum wells with critical well thickness, where the band gap is closed, and the low energy spectrum is described by a single Dirac cone. In…
Diffusion of photo-excited holes in viscous electron fluid
Yu. A. Pusep, M. D. Teodoro, V. Laurindo +3
The diffusion of photo-generated holes is studied in a high-mobility mesoscopic GaAs\ channel where electrons exhibit hydrodynamic properties. It is shown that the injection of hol…
Thermoelectric transport in a three-dimensional HgTe topological insulator
G. M. Gusev, Z. D. Kvon, A. D. Levin +1
The thermoelectric response of 80-nm-thick strained HgTe films of a three-dimensional topological insulator (3D TI) has been studied experimentally. An ambipolar thermopower is obs…
Engineering topological phases in triple HgTe/CdTe quantum wells
G. J. Ferreira, D. R. Candido, F. G. G. Hernandez +4
Quantum wells formed by layers of HgTe between HgCdTe barriers lead to two-dimensional (2D) topological insulators, as predicted by the BHZ model. Here, we theoreticall…
Transport through the network of topological channels in HgTe based quantum well
G. M. Gusev, Z. D. Kvon, D. A. Kozlov +3
Topological insulators represent a new quantum state of matter which is characterized by edge or surface states and an insulating band gap in the bulk. In a two dimensional (2D) sy…
Experimental analysis of the spin-orbit coupling dependence on the drift velocity of a spin packet
N. M . Kawahala, F. C. D. Moraes, G. M. Gusev +2
Spin transport was studied in a two-dimensional electron gas hosted in a wide GaAs quantum well occupying two subbands. Using space and time Kerr rotation microscopy to image drift…
Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells
S. Ullah, G. M. Gusev, A. K. Bakarov +1
In this contribution, we investigated the spin coherence of high-mobility dense two-dimensional electron gases confined in multilayer systems. The dynamics of optically-induced spi…
Tailoring multilayer quantum wells for spin devices
S. Ullah, G. M. Gusev, A. K. Bakarov +1
The electron spin dynamics in multilayer GaAs/AlGaAs quantum wells, containing high-mobility dense two-dimensional electron gases, have been studied using time-resolved Kerr rotati…
Robustness of spin coherence of the exciton bound to neutral donor states in multilayer system
S. Ullah, F. C. D. Moraes, G. M. Gusev +2
We address the temperature influence on the precessional motion of electron spins under transverse magnetic field, studied in a GaAs/AlGaAs triple quantum wells, using pump-probe K…
Large anisotropic spin relaxation time of exciton bound to donor states in triple quantum wells
S. Ullah, G. M. Gusev, A. K. Bakarov +1
We have studied the spin dynamics of a dense two-dimensional electron gas confined in a GaAs/AlGaAs triple quantum well by using time-resolved Kerr rotation and resonant spin ampli…
Macroscopic transport of a current-induced spin polarization
S. Ullah, G. J. Ferreira, G. M. Gusev +2
Experimental studies of spin transport in a two-dimensional electron gas hosted by a triple GaAs/AlGaAs quantum well are reported. Using time-resolved Kerr rotation, we observed th…
Macroscopic transverse drift of long current-induced spin coherence in two-dimensional electron gases
F. G. G. Hernandez, S. Ullah, G. J. Ferreira +3
We imaged the transport of current-induced spin coherence in a two-dimensional electron gas confined in a triple quantum well. Nonlocal Kerr rotation measurements, based on the opt…
Long-lived nanosecond spin coherence in high-mobility 2DEGs confined in double and triple quantum wells
S. Ullah, G. M. Gusev, A. K. Bakarov +1
We investigated the spin coherence of high-mobility two-dimensional electron gases confined in multilayer GaAs quantum wells. The dynamics of the spin polarization was optically st…
Microwave-induced magnetooscillations and signatures of zero-resistance states in phonon-drag voltage in two-dimensional electron systems
A. D. Levin, Z. S. Momtaz, G. M. Gusev +2
We observe the phonon-drag voltage oscillations correlating with the resistance oscillations under microwave irradiation in a two-dimensional electron gas in perpendicular magnetic…
Resonant optical control of the electrically-induced spin polarization by periodic excitation
Felix G. G. Hernandez, Gennady M. Gusev, Askhat K. Bakarov
We show that the electron spin polarization generated by an electrical current may have its direction controlled and magnitude amplified by periodic optical excitation. The electri…