ISSN:
1434-6036
Schlagwort(e):
PACS. 72.10.Di Scattering by phonons, magnons, and other non localized excitations - 63.20.Kr Phonon-electron and phonon-phonon interactions
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract: We calculate the electron-phonon scattering rate for an asymmetric double barrier resonant tunneling structure based on dielectric continuum theory, including all phonon modes, and show that interface phonons contribute much more to the scattering rate than do bulk-like LO phonons for incident energies which are approximately within an order of magnitude of the Fermi energy. The maximum scattering rate occurs for incident electron energies near the quantum well resonance. Subband nonparabolicity has a significant influence on electron-phonon scattering in these structures. We show that the relaxation time is comparable to the dwell time of electrons in the quantum well for a typical resonant tunneling structure.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s100510050357
Permalink
