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Recent investigation of microwave noise of nominally undoped AlGaN/GaN channels is reviewed. The noise is agitated in a two-dimensional electron gas by an electric field applied in the plane of electron confinement. The experimental results are compared with those of Monte Carlo simulation and with simple semi-empirical formulas. The importance of hot-phonon effects is emphasised.
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Matulionis et al. (2004) studied this question.
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