Coulomb scattering lifetime of a two-dimensional electron gas
نویسندگان
چکیده
منابع مشابه
Coulomb scattering lifetime of a two-dimensional electron gas.
Motivated by a recent tunneling experiment in a double quantum-well system, which reports an anomalously enhanced electronic scattering rate in a clean two-dimensional electron gas, we calculate the inelastic quasiparticle lifetime due to electron-electron interaction in a single loop dynamically screened Coulomb interaction within the random-phase-approximation. We obtain excellent quantitativ...
متن کاملCoulomb drag between disordered two-dimensional electron-gas layers.
We derive and evaluate expressions for the frictional Coulomb drag between disordered two-dimensional electron gas layers. Our derivation is based on the memory-function formalism and the expression for the drag reduces to previously known results in the ballistic limit. We find that Coulomb drag is appreciably enhanced by disorder at low temperatures when the mean-free-path within a layer is c...
متن کاملDislocation scattering in a two dimensional electron gas
A theory of scattering by charged dislocation lines in a two-dimensional electron gas (2DEG) is developed. The theory is directed towards understanding transport in AlGaN/GaN high-electron-mobility transistors (HEMT), which have a large number of line dislocations piercing through the 2DEG. The scattering time due to dislocations is derived for a 2DEG in closed form. This work identifies disloc...
متن کاملSpatially probed electron-electron scattering in a two-dimensional electron gas
M. P. Jura,1,* M. Grobis,2,† M. A. Topinka,2,3,‡ L. N. Pfeiffer,4,§ K. W. West,4,§ and D. Goldhaber-Gordon2, 1Department of Applied Physics, Stanford University, Stanford, California 94305, USA 2Department of Physics, Stanford University, Stanford, California 94305, USA 3Department of Materials Science & Engineering, Stanford University, Stanford, California 94305, USA 4Bell Labs, Alcatel-Lucen...
متن کاملAbsolute negative resistance induced by directional electron-electron scattering in a two-dimensional electron gas.
A three-terminal device formed by two electrostatic barriers crossing an asymmetrically patterned two-dimensional electron gas displays an unusual potential depression at the middle contact, yielding absolute negative resistance. The device displays momentum and current transfer ratios that far exceed unity. The observed reversal of the current or potential in the middle terminal can be interpr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 1996
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.53.9964