POLAR OPTICAL-PHONON SCATTERING IN 3-DIMESIONAL AND 2-DIMENSIONAL ELECTRON GASES

被引：112

作者：

GELMONT, BL ^{[1
]}

SHUR, M ^{[1
]}

STROSCIO, M ^{[1
]}

机构：

[1] USA,RES OFF,RES TRIANGLE PK,NC 27709

来源：

JOURNAL OF APPLIED PHYSICS | 1995年 / 77卷 / 02期

关键词：

D O I：

10.1063/1.359051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The concept of the polar optical momentum relaxation time for phonon energies larger than the thermal energy is applied to the analytical calculations of the electron mobility in bulk GaAs and in a two-dimensional (2D) electron gas. The theory also accounts for nonparabolicity. For the bulk material, the analytical formula is in good agreement with experimental data even at elevated temperatures where it can be used as an extrapolation formula. The comparison with numerical simulations for the 2D gas shows that the analytical formula for the 2D case applies when intersubband scattering is unimportant. When many subbands are involved in scattering processes, the polar optical mobility can be estimated using the analytical formula for the bulk case. Hence the results provide convenient analytical equations for polar optical mobility which can be used in device simulators. © 1995 American Institute of Physics.

引用

页码：657 / 660

页数：4

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