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Proceedings Paper

Single particle and momentum relaxation times in two-dimensional electron systems (updated May 14, 2008)
Author(s): Sarah J MacLeod; Theodore P. Martin; Adam P. Micolich; Alex R. Hamilton
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Paper Abstract

In this paper we present a detailed analysis of charged impurity scattering for two-dimensional electron systems in high quality GaAs heterostructures, using both first order perturbation theory and a more complex self-consistent multiple scattering theory. We calculate scattering due to both homogeneous background impurities and remote ionised impurities in modulation doped heterostructures. We consider both the quantum scattering time τq (important for quantum effects and devices) and the more conventional momentum relaxation time τt. Whereas the total scattering time gives an indication of the magnitude of the disorder, the ratio of τt / τq gives an indication as to the origin of the disorder.

Paper Details

Date Published: 9 January 2008
PDF: 9 pages
Proc. SPIE 6800, Device and Process Technologies for Microelectronics, MEMS, Photonics, and Nanotechnology IV, 68001L (9 January 2008); doi: 10.1117/12.759655
Show Author Affiliations
Sarah J MacLeod, Univ. of New South Wales (Australia)
Theodore P. Martin, Univ. of New South Wales (Australia)
Adam P. Micolich, Univ. of New South Wales (Australia)
Alex R. Hamilton, Univ. of New South Wales (Australia)


Published in SPIE Proceedings Vol. 6800:
Device and Process Technologies for Microelectronics, MEMS, Photonics, and Nanotechnology IV
Hark Hoe Tan; Jung-Chih Chiao; Lorenzo Faraone; Chennupati Jagadish; Jim Williams; Alan R. Wilson, Editor(s)

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