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Effects of Conduction Band Offset on Two-Dimensional Electron Gas in Delta-Doped InGaAs-Based Heterostructures
並列摘要
Electron transport properties of delta-doped AlInAs/InGaAs and AlAsSb/InGaAs heterostructures lattice-matched to InP substrates are investigated using the Shubnikovde Haas oscillations and the Hall effect. The Fast Fourier transform of the magnetoresistance shows that both the ground and first excited subbands in the InGaAs channel are occupied. The mobility in the second subband is higher than that in the first subband in both heterostructures. This is attributed to the fact that electrons in the first subband are, on average, closer to the interface and are therefore scattered more strongly by ionized impurities. The dependence of the mobility on carrier concentration suggests that intersubband scattering rate is more dominant in structures with higher conduction band offsets. Alloy scattering, on the other hand, is found to be more dominant in the higher band offset system.
並列關鍵字
無資料延伸閱讀
- Chiu, Y. H. (2004). Spin-splitting and huge positive magnetoresistance in a high-mobility GaAs two-dimensional electron gas [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2004.00726
- Wun, S. J. (2012). Photonic Bandgaps and Omnidirectional Reflection in Quasiperiodic Dielectric Heterostructures [doctoral dissertation, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2012.10877
- 呂育瑄（2021）。Investigation of Photoelectric Characteristics of Two-Dimensional Material Heterostructure Devices〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU202103418
- 汪子茗（2022）。Material and Electrical Analysis for Two Dimensional Electron Gases in Undoped Si/SiGe Heterostructure〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU202203328
- Zhang, Z. Y. (2007). Microwave-modulated Transport of Two-dimensional Electron Gas in GaAs/AlGaAs Heterostructure &Electrical Measurements of an AlXGa1-XN/GaN High Electron Mobility Transistor Structure Grown on Si [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2007.00163