Impurity scattering limited mobility in a quantum well heterojunction
作者:
Johnson Lee,
Harold N. Spector,
Vijay K. Arora,
期刊:
Journal of Applied Physics
(AIP Available online 1983)
卷期:
Volume 54,
issue 12
页码: 6995-7004
ISSN:0021-8979
年代: 1983
DOI:10.1063/1.331963
出版商: AIP
数据来源: AIP
摘要:
We calculate the mobility of carriers in a quantum well structure when they are scattered by ionized impurities in the size‐quantum limit (SQL) where the carriers are assumed to populate only the lowest quantized energy level. It is found that the probability of scattering due to ionized impurities decreases with the well thickness in contrast to the case of acoustic phonon scattering where the scattering probability is enhanced under the conditions of the SQL. The temperature and thickness dependence of the mobility depends critically on the screening of the Coulomb potential due to the presence of the ionized impurities.
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