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arXiv · 1510.01426

Enhancement mechanism of the electron g-factor in quantum point contacts

Grégoire Vionnet·Oleg P. Sushkov
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Abstract

The electron g-factor measured in a quantum point contact by source-drain bias spectroscopy is significantly larger than its value in a two-dimensional electron gas. This enhancement, established experimentally in numerous studies, is an outstanding puzzle. In the present work we explain the mechanism of this enhancement in a theory accounting for the electron-electron interactions. We show that the effect relies crucially on the non-equilibrium nature of the spectroscopy at finite bias.

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Grégoire Vionnet, Oleg P. Sushkov. 2016-04-11. Enhancement mechanism of the electron g-factor in quantum point contacts. https://doi.org/10.1103/physrevlett.116.126801

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