TY - JOUR
T1 - An ensemble Monte Carlo study of high-field transport in β-SiC
AU - Tsukioka, K.
AU - Vasileska, Dragica
AU - Ferry, D. K.
N1 - Funding Information:
Correspondence to: K. Tsukioka, Center for Solid State Electronics Research, Arizona State University. Tempe, AZ 85287 6206, USA. * Work supported in part by the office of Naval Research. ’ On leave from: Department of Electronic Engineering, Faculty of Engineering, Tamagawa University, Tokyo 194. Japan.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1993/4
Y1 - 1993/4
N2 - The high-field transport of electrons in β-SiC is investigated by use of an ensemble Monte Carlo technique. We consider scattering by acoustic deformation potential, polar optical phonon, two different equivalent intervalley phonons (one first-order and one zero-order interaction), impurity scattering and impact ionization. The intervalley coupling constants and deformation potential constant are estimated by fitting the ohmic mobility to the measured experimental values over the temperature range 50-1000 K. Polar runaway occurs above 5 × 105 V/cm. The distribution can be partially stabilized by impact ionization processes, but the runaway is still observed. For a nonparabolic band model, the drift velocity has a gentle peak around 4 × 105 V/cm. The peak value is 1.9 × 107 cm/s, which is comparable to the experimental value observed in 6H-SiC (2.1 × 107 cm/s).
AB - The high-field transport of electrons in β-SiC is investigated by use of an ensemble Monte Carlo technique. We consider scattering by acoustic deformation potential, polar optical phonon, two different equivalent intervalley phonons (one first-order and one zero-order interaction), impurity scattering and impact ionization. The intervalley coupling constants and deformation potential constant are estimated by fitting the ohmic mobility to the measured experimental values over the temperature range 50-1000 K. Polar runaway occurs above 5 × 105 V/cm. The distribution can be partially stabilized by impact ionization processes, but the runaway is still observed. For a nonparabolic band model, the drift velocity has a gentle peak around 4 × 105 V/cm. The peak value is 1.9 × 107 cm/s, which is comparable to the experimental value observed in 6H-SiC (2.1 × 107 cm/s).
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U2 - 10.1016/0921-4526(93)90279-F
DO - 10.1016/0921-4526(93)90279-F
M3 - Article
AN - SCOPUS:0027577629
SN - 0921-4526
VL - 185
SP - 466
EP - 470
JO - Physica B: Physics of Condensed Matter
JF - Physica B: Physics of Condensed Matter
IS - 1-4
ER -