| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Oscillations of Low-Field Magnetoresistivity of Two-Dimensional Electron Gases in Al0.22Ga0.78N/GaN Heterostructures in a Weak Localization Region |
| HAN Kui1, TANG Ning1**, DUAN Jun-Xi1, LU Fang-Chao1, LIU Yu-Chi1, SHEN Bo1**, ZHOU Wen-Zheng2, LIN Tie2, SUN Lei2, YU Guo-Lin2, CHU Jun-Hao2
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1State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871
2National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083
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HAN Kui, TANG Ning, DUAN Jun-Xi et al 2011 Chin. Phys. Lett. 28 087302 |
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Abstract Low-field magnetotransport properties of two-dimensional electron gases (2DEGs) are investigated in Al0.22Ga0.78N/GaN heterostructures. By means of a tilting magnetic field, unexpected oscillations of magnetoresistivity are observed in a weak localization region. Qualitative understanding based on Altshuler–Aronov–Spivak oscillations is proposed for the case of interface disorder in Al0.22Ga0.78N/GaN heterostructures.
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| Keywords:
73.43.Qt
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Received: 15 November 2010
Published: 28 July 2011
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