Work

Monte Carlo studies of nonequilibrium phonon effects in polar semiconductors and quantum wells. II. Non-Ohmic transport in n -type gallium arsenide

Year: 1989

Type: article

Abstract: Effects of LO-phonon disturbances on the transient and steady-state high--dc-field response of n-type gallium arsenide are studied by implementing the simulation of nonequilibrium phonon distributions into the conventional Monte Carlo algorithms for hot-carrier transport in semiconductors. Strong LO-phonon amplification is found for the whole range of fields, carrier densities, and temperatures of interest. At room temperature the phonon disturbances lead to enhancements of up to 20% of the steady-state velocity at low fields and to reductions of up to 10% for fields around and above the maximum of the velocity-field characteristics. However, detailed phase-space restrictions for LO-phonon reabsorption prevent a noticeable interference of the phonon buildup with the transient velocity overshoot.

Source: Physical review. B, Condensed matter

DOI: 10.1103/physrevb.39.7866

Authors: M. Rieger, P. Kocevar, P. Lugli, P. Bordone, L. Reggiani, S. M. Goodnick

Institutions: University of Graz, University of Rome Tor Vergata, University of Modena and Reggio Emilia, Oregon State University

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2046436675

FWCI: 2.956

Cites: 25

Cited by: 42

Related to: 10