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oai:www.ideals.illinois.edu:2142/22368 2023-07-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Leburton, Jean-Pierre Briggs, Stephen Jeffrey 2011-05-07T13:37:37Z 2011-05-07T13:37:37Z 10000-01-01 1990 Because of the particular confinement configuration of one-dimensional systems, the absence of angular randomization during scattering makes the carrier distribution sensitive to external perturbations and causes appreciable deviations from the equilibrium relatively rapidly. A Monte Carlo simulation is presented of a multisubband quasi-one-dimensional gallium arsenide-aluminum gallium arsenide structure. The model includes multiple subbands, polar optic and acoustic phonons, intervalley scattering, and band structure non-parabolicity. The linear approximation to the Boltzmann Transport Equation is found to be inconsistent for fields as low as 50 V/cm. A situation occurs under longitudinal field conditions where an upper subband population is enhanced with respect to the bottom subband. Intersubband optical transitions with the possibility of far-infrared stimulated emission seem to be significant. Differential mobility in excess of twice the bulk value at 300 K is obtained. The simulation estimates the time required for electrons to undergo intervalley scattering to three-dimensional states to be in the range of 4 nsec down to 1 psec for fields in the range of 100 V/cm to 8 kV/cm. The corresponding distances in the wire vary from 130 $\mu$m down to the submicron range. Made available in DSpace on 2011-05-07T13:37:37Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9114182.pdf: 3321211 bytes, checksum: daa39ea00b83e2926cfbd2075d73343f (MD5) Previous issue date: 1990 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:57:09Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:26:46-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9114182 (UMI)AAI9114182 http://hdl.handle.net/2142/22368 eng Copyright 1990 Briggs, Stephen Jeffrey Physics, Electricity and Magnetism Physics, Condensed Matter Monte Carlo simulation of quasi-one-dimensional semiconductors text Electrical and Computer Engineering Electrical and Computer Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.