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Current Scaling and Electron Heating in a GaN/AlGaN Two-Dimensional Electron System
Kuang Yao Chen,Li-Hung Lin,Chin-An Chang,Chi-Te Liang,N. C. Chen,P. H. Chang,Wen-Jang Shiue,Zhi-Hao Sun 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.6
A GaN/AlGaN two-dimensional electron system (2DES) has been prepared on a Si substrate, and the electron heating effect in the 2DES has been studied experimentally by using the resistance of the 2DES as a self-thermometer. The relation $T_e$ $\sim$ $I^{1.42}$ was obtained, which is in contrast to $T_e$ $\sim$ $I^{0.5}$ in the spin-split resistivity peaks in a GaAs/AlGaAs 2DES. A possible reason for this is discussed