標題: Probing the coexistence of semiclassical transport and localization in a two-dimensional electron gas using microwave radiation
作者: Hsu, Chang-Shun
Kannan, E. S.
Portal, J-C.
Liang, C. -T.
Huang, C. F.
Lin, S. -D.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Semiconductors;Quantum well
公開日期: 1-Mar-2013
摘要: We have performed magnetoresistance measurements on a GaAs/AlGaAs two-dimensional electron gas under microwave heating. Both the magneto-oscillations and magnetoresistance minima are used as electron thermometers to determine the electron effective temperature T-e. When there is no clear cyclotron gap, it is found that T-e determined from these two methods can be substantially different such that we can still distinguish localized electrons from the semiclassical conducting ones. The almost constant T-e obtained from the magnetoresistance minima reveals the survived equivalence between different Landau-band tails under insufficient localization. (C) 2012 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ssc.2012.11.019
http://hdl.handle.net/11536/21423
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2012.11.019
期刊: SOLID STATE COMMUNICATIONS
Volume: 156
Issue: 
起始頁: 45
結束頁: 48
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