Density-dependent two-dimensional optimal mobility in ultra-high-quality semiconductor quantum wells
Seongjin Ahn,
Sankar Das Sarma
Abstract:We calculate using the Boltzmann transport theory the density dependent mobility of twodimensional (2D) electrons in GaAs, SiGe and AlAs quantum wells as well as of 2D holes in GaAs quantum wells. The goal is to precisely understand the recently reported breakthrough in achieving a record 2D mobility for electrons confined in a GaAs quantum well. Comparing our theory with the experimentally reported electron mobility in GaAs quantum wells, we conclude that the mobility is limited by unintentional background ra… Show more
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