Effects of a magnetic field on electron-phonon scattering in quantum wires

Autor:	N. Telang, Supriyo Bandyopadhyay
Rok vydání:	1993
Předmět:	Scattering amplitude Physics Phonon scattering Field (physics) Condensed matter physics Scattering Orders of magnitude (temperature) Electric field Mott scattering Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Magnetic field
Zdroj:	Physical Review B. 48:18002-18009
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.48.18002
Popis:	We have rigorously calculated the bare electron-phonon scattering rates in semiconductor quantum wires in the presence of an external magnetic field. The magnetic field has several interesting effects on the scattering rates. It drastically reduces acoustic-phonon scattering (by orders of magnitude at easily achievable field strengths), but increases longitudinal-optical and surface optical-phonon scattering. It also enhances the difference between the acoustic-phonon scattering rates at energies just below and above a subband minimum. The latter effect may cause negative differential mobility to appear in quantum wires at electric fields far below the threshold for intervalley transfer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e850d1b9eac42580e2882eb6751e131f https://doi.org/10.1103/physrevb.48.18002 Zobrazit plný text záznamu