Piezoelectric electron-phonon interaction in impure semiconductors: 2D electrons versus composite fermions

Дата и время публикации : 1997-05-25T15:46:24Z

Авторы публикации и институты :
D. V. Khveshchenko
Michael Reizer

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 12 pages, Latex, Nordita report
Первичная категория: cond-mat.mes-hall

Все категории : cond-mat.mes-hall

Краткий обзор статьи: We develop a unified treatment of the piesoelectric coupling between two-dimensional electrons and bulk phonons in both cases of zero and strong magnetic fields, the latter corresponding to even denominator filling fractions. In contrast to the case of coupling via the deformation potential, the leading contributions due to impurity-renormalized electron-phonon vertices are not exactly cancelled by processes of inelastic electron-impurity scattering. Electron energy relaxation time, diffusion correction to the conductivity, and phonon emission rate by hot electrons are computed for realistic $GaAs/AlGaAs$ heterostructures.

Category: Physics