Abstract
We investigated two-dimensional electron transport in doped AlGaN–GaN heterostructures (with the electron sheet concentration ns≈1013 cm−2) grown on conducting 6H–SiC substrates in the temperature range T=0.3–300 K. The electron mobility in AlGaN–GaN heterostructures grown on SiC was higher than in those on sapphire substrates, especially at cryogenic temperatures. The highest measured Hall mobility at room temperature was μH=2019 cm2/V s. At low temperatures, the electron mobility increased approximately five times and saturated below 10 K at μH=10250 cm2/V s. The experimental results are compared with the electron mobility calculations accounting for various electron scattering mechanisms.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:28 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 3, 2024, 8:58 a.m.) |
Indexed | 3 days, 5 hours ago (Aug. 23, 2025, 9:43 p.m.) |
Issued | 27 years, 6 months ago (Feb. 9, 1998) |
Published | 27 years, 6 months ago (Feb. 9, 1998) |
Published Print | 27 years, 6 months ago (Feb. 9, 1998) |
@article{Gaska_1998, title={Electron transport in AlGaN–GaN heterostructures grown on 6H–SiC substrates}, volume={72}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.120852}, DOI={10.1063/1.120852}, number={6}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Gaska, R. and Yang, J. W. and Osinsky, A. and Chen, Q. and Khan, M. Asif and Orlov, A. O. and Snider, G. L. and Shur, M. S.}, year={1998}, month=feb, pages={707–709} }