Abstract
We study the confinement of acoustical modes within 2DEG due only to the electron-phonon interaction. The confined modes split out from the bulk phonons even at uniform lattice parameters, when the 2DEG is created by means of modulation doping. The effect is more pronounced when the wave vector q of the modes increases and is maximum at q = 2 k{sub F} (k{sub F} is the Fermi wave vector). In the case of several electron sheets the additional features of the confinement effect appear. In the limit of the strong electron-phonon coupling and high surface concentration of the electrons the considered system can suffer Peierls-type phase transition. In this case periodical deformation of the lattice and charge density wave are confined within the electron sheet. (author). 18 refs, 2 figs.
Kochelap, V A;
[1]
Gulseren, O
[2]
- International Centre for Theoretical Physics, Trieste (Italy)
- Bilkent Univ., Ankara (Turkey). Dept. of Physics
Citation Formats
Kochelap, V A, and Gulseren, O.
Confinement of acoustical modes due to the electron-phonon interaction within 2D-electron gas.
IAEA: N. p.,
1992.
Web.
Kochelap, V A, & Gulseren, O.
Confinement of acoustical modes due to the electron-phonon interaction within 2D-electron gas.
IAEA.
Kochelap, V A, and Gulseren, O.
1992.
"Confinement of acoustical modes due to the electron-phonon interaction within 2D-electron gas."
IAEA.
@misc{etde_10120038,
title = {Confinement of acoustical modes due to the electron-phonon interaction within 2D-electron gas}
author = {Kochelap, V A, and Gulseren, O}
abstractNote = {We study the confinement of acoustical modes within 2DEG due only to the electron-phonon interaction. The confined modes split out from the bulk phonons even at uniform lattice parameters, when the 2DEG is created by means of modulation doping. The effect is more pronounced when the wave vector q of the modes increases and is maximum at q = 2 k{sub F} (k{sub F} is the Fermi wave vector). In the case of several electron sheets the additional features of the confinement effect appear. In the limit of the strong electron-phonon coupling and high surface concentration of the electrons the considered system can suffer Peierls-type phase transition. In this case periodical deformation of the lattice and charge density wave are confined within the electron sheet. (author). 18 refs, 2 figs.}
place = {IAEA}
year = {1992}
month = {Sep}
}
title = {Confinement of acoustical modes due to the electron-phonon interaction within 2D-electron gas}
author = {Kochelap, V A, and Gulseren, O}
abstractNote = {We study the confinement of acoustical modes within 2DEG due only to the electron-phonon interaction. The confined modes split out from the bulk phonons even at uniform lattice parameters, when the 2DEG is created by means of modulation doping. The effect is more pronounced when the wave vector q of the modes increases and is maximum at q = 2 k{sub F} (k{sub F} is the Fermi wave vector). In the case of several electron sheets the additional features of the confinement effect appear. In the limit of the strong electron-phonon coupling and high surface concentration of the electrons the considered system can suffer Peierls-type phase transition. In this case periodical deformation of the lattice and charge density wave are confined within the electron sheet. (author). 18 refs, 2 figs.}
place = {IAEA}
year = {1992}
month = {Sep}
}