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15 September 2011 Electron beam formation from spin-orbit interactions in zinc-blende semiconductor quantum wells
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Abstract
We find a dramatic enhancement of electron propagation along a narrow range of real-space angles from an isotropic source in a two-dimensional quantum well made from a zincblende semiconductor. This "electron beam" formation is caused by the interplay between spin-orbit interaction originating from a perpendicular electric field to the quantum well and the intrinsic spin-orbit field of the zincblende crystal lattice in a quantum well, in situations where the two fields are different in strength but of the same order of magnitude. Beam formation is associated with caustics and can be described semi-classically using a stationary phase analysis.
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David H. Berman and Michael E. Flatté "Electron beam formation from spin-orbit interactions in zinc-blende semiconductor quantum wells", Proc. SPIE 8100, Spintronics IV, 810014 (15 September 2011); doi: 10.1117/12.893825; https://doi.org/10.1117/12.893825
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