Yan, C;
Kumar, S;
Pepper, M;
Thomas, K;
See, P;
Farrer, I;
Ritchie, D;
... Jones, G; + view all
(2018)
Direct observation of spin polarization in GaAs quantum wires by transverse electron focusing.
Journal of Physics: Conference Series
, 964
(1)
, Article 012002. 10.1088/1742-6596/964/1/012002.
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Abstract
We present transverse electron focusing measurements in the two dimensional electrons gas formed at the interface of a GaAs/AlGaAs heterostructure. The experimental arrangement consists of two orthogonal quantum point contacts (QPCs), one acting as injector and the other as detector of the collimated 1D electrons as a function of transverse magnetic field. The focusing spectrum shows anomalous behaviour, the first and third focusing peaks split into two sub-peaks while second peak remains as a single peak. The observed splitting, a signature of spin states, arises from the spin-orbit interaction when the 1D electrons are injected into the 2D regime, thus allowing us to manipulate the spin states within the 1D channel.
| Type: | Article |
|---|---|
| Title: | Direct observation of spin polarization in GaAs quantum wires by transverse electron focusing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1742-6596/964/1/012002 |
| Publisher version: | http://dx.doi.org/10.1088/1742-6596/964/1/012002 |
| Language: | English |
| Additional information: | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution (https://creativecommons.org/licenses/by/3.0/) of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. © Published under licence by IOP Publishing Ltd. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10046733 |
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