Abstract
The unexpected "0.7" plateau of conductance quantisation is usually observed for ballistic one-dimensional devices. In this work we study a quasi-ballistic quantum wire, for which the disorder-induced backscattering reduces the conductance quantisation steps. We find that the transmission probability resonances coexist with the anomalous plateau. The studies of these resonances as a function of the in-plane magnetic field and electron density point to the presence of spin polarisation at low carrier concentrations and constitute a method for the determination of the effective g-factor suitable for disordered quantum wires.
Original language | English |
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Article number | 27003 |
Journal | EPL |
Volume | 82 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2008 Apr 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)