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Energy lowering of 2DEG by strong magnetic field
Physical Review Letters, 1993We study the two-dimensional interacting electrons in a magnetic field. It is found that for systems with completely filled Landau levels, when the electron density and magnetic field are large enough, the total energy is lowered by the magnetic field.
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Localization effects in a non-degenerate 2DEG
Surface Science, 1988Abstract We report a systematic study of localization effects in a non-degenerate two-dimensional electron gas formed on a solid hydrogen substrate. Magnetoresistance measurements in a Corbino geometry are presented as a function of surface disorder.
P.W. Adams, M.A. Paalanen
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Modification of a shallow 2DEG by AFM lithography
Microelectronic Engineering, 2001A conducting tip of an atomic force microscope (AFM) is used to induce ultra-small oxide patterns on metallic (Ti) thin film and semiconducting (GaAs) surfaces. The oxide is used to deplete a shallow two-dimensional electron gas (2DEG) formed at a GaAs/AlGaAs interface, 274 A beneath the surface.
R. Nemutudi +4 more
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Spectroscopy of electron–electron scattering in a 2DEG
Physics-Uspekhi, 2001Experimentally electron-beam injection and detection via quantum point-contacts is used to investigate the scattering of a non-equilibrium electron distribution in a two-dimensional electron gas (2DEG) of a GaAs/(Ga,Al)As heterostructure. The energy dependence of electron–electron scattering processes has been studied in a weak magnetic field by ...
H Buhmann +6 more
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Bernstein modes in grating-coupled 2DEGs
Semiconductor Science and Technology, 1996Calculations and experimental data are reported on the optical coupling to the Bernstein modes of a two-dimensional electron gas (2DEG) in a perpendicular magnetic field using an overlaid grating coupler. The Bernstein modes are harmonics of the cyclotron resonance and are observed indirectly through their interaction with the 2DEG magnetoplasmon.
D E Bangert +4 more
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An explicit model for a quantum channel in 2DEG
Superlattices and Microstructures, 2002A two-parametric model for a channel in a two-dimensional electron gas (2DEG) is proposed which allows for the explicit analytical solution for the problem of quantum electron transport through the constriction. Conductance step smearing appears naturally and a simple criterion for the step occurrence in terms of channel parameters is given.
Valeri A. Fedirko +7 more
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Metal/2DEG contact — a microscopic model
Surface Science, 1994Abstract A model for a metal contact to a high mobility 2DEG is considered. The model takes into account strong elastic and inelastic electron scattering in the metal and the difference in Fermi surfaces of the metal and of the 2DEG. The thermalization probability for an electron which is incident on the contact is calculated.
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Silicene-2DEG heterostructures: Collective excitations investigations
Physica B: Condensed Matter, 2023Van Men Nguyen, Kim Phuong Dong Thi
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SPIN INTERFERENCE IN RASHBA 2DEG SYSTEMS
International Journal of Modern Physics B, 2008The gate controllable SOI provides useful information about spin interference.1 Spin interference effects are studied in two different interference loop structures. It is known that sample specific conductance fluctuations affect the conductance in the interference loop.
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2DEG transport properties over temperature for AlGaN/GaN HEMT and AlGaN/InGaN/GaN pHEMT
Microelectronic Engineering, 2021Md Abdul Kaium Khan +2 more
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