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Growth and subband structure determination of high mobility hole gases on (0 0 1) and (1 1 0) GaAs

Gerl, Christian ; Bauer, J. ; Wegscheider, Werner
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Date of publication of this fulltext: 08 Feb 2010 13:24


Abstract

We introduce high mobility two-dimensional hole systems (2DHSs) in AlGaAs/GaAs heterosystems grown by molecular beam epitaxy (MBE). Utilizing a carbon filament source, two-dimensional hole gases (2DHGs) were fabricated on the (0 0 1) and (1 1 0) crystal plan. These samples exhibit low-temperature mobilities beyond 106 cm2/V s at densities varying from 0.6 to 2.3×1011 cm−2. In order to explore the ...

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