Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-06-06
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
short review article, submitted for publication
Scientific paper
Two-dimensional electrons in AlAs quantum wells occupy multiple conduction-band minima at the X- points of the Brillouin zone. These valleys have large effective mass and g-factor compared to the stan-dard GaAs electrons, and are also highly anisotropic. With proper choice of well width and by applying symmetry-breaking strain in the plane, one can control the occupation of different valleys thus rendering a system with tuneable effective mass, g-factor, Fermi contour anisotropy, and valley degeneracy. Here we review some of the rich physics that this system has allowed us to explore.
de Poortere E. P.
Gunawan Oki
Shayegan Mansour
Shkolnikov Y. P.
Tutuc Emanuel
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