Research paperExperimental CharacterizationTheoreticalBulk and shear viscosities in multicomponent 2D electron systemA. D. Levin, G. M. Gusev, V. A. Chitta, A. S. Jaroshevich et al.arXiv preprint·2024·10.1103/PhysRevB.110.195402·arXiv:2411.02595AbstractWe investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetoresistance, which we attribute to the imbalance between different types of particles that are sensitive to bulk viscosities. At low temperatures, we found negative magnetoresistance, attributed to shear viscosity. By analyzing the magnetoresistance data, we were able to determine both viscosities. Remarkably, the electronic bulk viscosity was significantly larger than the shear viscosity. Studying multicomponent electron systems in the hydrodynamic regime presents an intriguing opportunity to further explore the physics in systems with high bulk viscosity.Read more
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample A with AlAs barriers.1 characterization6 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricAlAsSubstrate / DielectricExpand
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample B with AlxGa1−xAs barriers.1 characterization9 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalBulk and shear viscosities in multicomponent 2D electron systemA. D. Levin, G. M. Gusev, V. A. Chitta, A. S. Jaroshevich et al.arXiv preprint·2024·10.1103/PhysRevB.110.195402·arXiv:2411.02595AbstractWe investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetoresistance, which we attribute to the imbalance between different types of particles that are sensitive to bulk viscosities. At low temperatures, we found negative magnetoresistance, attributed to shear viscosity. By analyzing the magnetoresistance data, we were able to determine both viscosities. Remarkably, the electronic bulk viscosity was significantly larger than the shear viscosity. Studying multicomponent electron systems in the hydrodynamic regime presents an intriguing opportunity to further explore the physics in systems with high bulk viscosity.Read more
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample A with AlAs barriers.1 characterization6 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricAlAsSubstrate / DielectricExpand
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample B with AlxGa1−xAs barriers.1 characterization9 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalBulk and shear viscosities in multicomponent 2D electron systemA. D. Levin, G. M. Gusev, V. A. Chitta, A. S. Jaroshevich et al.arXiv preprint·2024·10.1103/PhysRevB.110.195402·arXiv:2411.02595AbstractWe investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetoresistance, which we attribute to the imbalance between different types of particles that are sensitive to bulk viscosities. At low temperatures, we found negative magnetoresistance, attributed to shear viscosity. By analyzing the magnetoresistance data, we were able to determine both viscosities. Remarkably, the electronic bulk viscosity was significantly larger than the shear viscosity. Studying multicomponent electron systems in the hydrodynamic regime presents an intriguing opportunity to further explore the physics in systems with high bulk viscosity.Read more
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample A with AlAs barriers.1 characterization6 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricAlAsSubstrate / DielectricExpand
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample B with AlxGa1−xAs barriers.1 characterization9 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalBulk and shear viscosities in multicomponent 2D electron systemA. D. Levin, G. M. Gusev, V. A. Chitta, A. S. Jaroshevich et al.arXiv preprint·2024·10.1103/PhysRevB.110.195402·arXiv:2411.02595AbstractWe investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetoresistance, which we attribute to the imbalance between different types of particles that are sensitive to bulk viscosities. At low temperatures, we found negative magnetoresistance, attributed to shear viscosity. By analyzing the magnetoresistance data, we were able to determine both viscosities. Remarkably, the electronic bulk viscosity was significantly larger than the shear viscosity. Studying multicomponent electron systems in the hydrodynamic regime presents an intriguing opportunity to further explore the physics in systems with high bulk viscosity.Read more
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample A with AlAs barriers.1 characterization6 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricAlAsSubstrate / DielectricExpand
Symmetrically doped GaAs triple quantum well mesoscopic Hall bar sample B with AlxGa1−xAs barriers.1 characterization9 properties2 figuresExperimentalGaAsStudied MaterialAlxGa₁-xAsSubstrate / DielectricExpand
