Speaker
Prof.
Oleg Sushkov
(University of New South Wales)
Description
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.
Primary author
Mr
Gregoire Vionnet
(Institute of Theoretical Physics, Ecole Polytechnique F\'ed\'erale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Co-author
Prof.
Oleg Sushkov
(University of New South Wales)
