PIEZOELECTRIC ELECTRON-PHONON INTERACTION IN IMPURE SEMICONDUCTORS - 2-DIMENSIONAL ELECTRONS VERSUS COMPOSITE FERMIONS

Authors
KHVESHCHENKO DV REIZER M
Citation
Dv. Khveshchenko et M. Reizer, PIEZOELECTRIC ELECTRON-PHONON INTERACTION IN IMPURE SEMICONDUCTORS - 2-DIMENSIONAL ELECTRONS VERSUS COMPOSITE FERMIONS, Physical review. B, Condensed matter, 56(24), 1997, pp. 15822-15826
Citations number
16
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
56
Issue
24
Year of publication
1997
Pages
15822 - 15826
Database
ISI
SICI code
0163-1829(1997)56:24<15822:PEIIIS>2.0.ZU;2-7
Abstract
We study the effects of piezoelectric coupling between two-dimensional electrons and bulk phonons in cases of both zero and strong perpendic ular magnetic fields, the latter corresponding to even-denominator fil ling fractions. In contrast to the case of coupling via the deformatio n potential, the leading contributions due to impurity-renormalized el ectron-phonon vertices are not exactly canceled by processes of inelas tic electron-impurity scattering. Electron energy relaxation time, dif fusion correction to the conductivity, and the phonon emission rate by hot electrons are computed for realistic GaAs/AlxGa1-xAs heterostruct ures. [S0163-1829(97)07147-6].