通过在低温和强磁场下的磁输运测量研究了非故意掺杂Al0.22Ga0.78N/GaN异质结二维电子气(2DEG)的磁电阻振荡现象.观察到了磁致子带间散射(MIS)效应.在极低温下观察到了表征两个子带被2DEG占据的双周期舒勃尼科夫-德哈斯(SdH)振荡.实验观察到MIS效应引起的磁电阻振荡的幅度随温度上升略有减小,振荡的频率为两个子带SdH振荡频率之差.随着温度的升高,MIS振荡成为主要的振荡.由于SdH振荡和MIS振荡对温度的依赖关系不同,实验观察到SdH和MIS振荡之间的调制在温度10和17 K之间最为强烈,其它温度下的调制很弱.
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