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Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling (Articolo in rivista)

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Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling (Articolo in rivista) (literal)

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A. Kononov, G. Biasiol, L. Sorba, and E. V. Deviatov (2012)
Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling
in Physical review. B, Condensed matter and materials physics
(literal)

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Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, 56127 Pisa, Italy Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia (literal)

Titolo

Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling (literal)

Abstract

We experimentally demonstrate the simultaneous reconstruction of the bulk and the edge energy spectra caused by strong spin-orbit interaction, at the two lowest filling factors ?=1 and ?=2 for InxGa1-xAs two-dimensional electron system with x=0.75. The observed reconstruction is of different character at these filling factors: It is characterized by zeroing of the energy gap at the levels crossing point at ?=2, while the reconstruction at ?=1 goes through the coexistence of two ?=1 quantum Hall phases with different spin projections. An analysis indicates a strong influence of many-body interaction on the reconstruction at ?=1. (literal)

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