Experimental findings reveal temperature alters electron effective mass and resonant plasmon frequency in AlGaN/GaN, indicating behavioral shifts in plasmonic applications.
The effect of temperature on two-dimensional plasmons in large-area AlGaN/GaN plasmonic crystals was studied experimentally. With the temperature increase the resonant plasmon frequency redshifts due to the strong temperature dependence of the electron effective mass and electron concentration under open to the environment surface of AlGaN. The temperature dependence of electron effective mass is confirmed by the cyclotron resonance measurements.
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Dub et al. (2025) studied this question.
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