Imaging transverse electron focusing in semiconducting heterostructures with spin-orbit coupling

Details Imaging transverse electron focusing in semiconducting heterostructures with spin-orbit coupling Imaging transverse electron focusing in semiconducting heterostructures with spin-orbit coupling

2007-03-10

arxiv.org/abs/cond-mat/0703267v2

"Quantum Magnetism", NATO Science for Peace and Security Series, pp. 151-162, Springer (2008).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Contribution to the Book/Proceedings of the PITP Les Houches School on "Quantum Magnetism" held on June, 2006. Final format

Scientific paper

Transverse electron focusing in two-dimensional electron gases (2DEGs) with strong spin-orbit coupling is revisited. The transverse focusing is related to the transmission between two contacts at the edge of a 2DEG when a perpendicular magnetic field is applied. Scanning probe microscopy imaging techniques can be used to study the electron flow in these systems. Using numerical techniques we simulate the images that could be obtained in such experiments. We show that hybrid edge states can be imaged and that the outgoing flux can be polarized if the microscope tip probe is placed in specific positions.

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