TITLE

Transport-to-quantum lifetime ratios in AlGaN/GaN heterostructures

AUTHOR(S)
Hsu, L.; Walukiewicz, W.
PUB. DATE
April 2002
SOURCE
Applied Physics Letters;4/8/2002, Vol. 80 Issue 14, p2508
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have calculated ratios of the transport-to-quantum lifetimes τ[sub t]/τ[sub q] of the two-dimensional electron gas in AlGaN/GaN heterostructures at low temperatures. In contrast to conventional interpretations, we show that large values of this ratio do not necessarily indicate that long-range scattering mechanisms such as Coulomb scattering are the dominant carrier scattering mechanisms and that large ratios (>20) can be obtained even when short-range scattering mechanisms are dominant. © 2002 American Institute of Physics.
ACCESSION #
6427080

 

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