Yan, C;
Kumar, SK;
Pepper, MP;
See, PS;
Farrer, IF;
Ritchie, DR;
Griffiths, JG;
(2017)
Temperature Dependence of Spin-Split Peaks in Transverse Electron Focusing.
Nanoscale Research Letters
, 12
, Article 553. 10.1186/s11671-017-2321-4.
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Abstract
We present experimental results of transverse electron-focusing measurements performed using n-type GaAs. In the presence of a small transverse magnetic field (B⊥), electrons are focused from the injector to detector leading to focusing peaks periodic in B⊥. We show that the odd-focusing peaks exhibit a split, where each sub-peak represents a population of a particular spin branch emanating from the injector. The temperature dependence reveals that the peak splitting is well defined at low temperature whereas it smears out at high temperature indicating the exchange-driven spin polarisation in the injector is dominant at low temperatures.
| Type: | Article |
|---|---|
| Title: | Temperature Dependence of Spin-Split Peaks in Transverse Electron Focusing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1186/s11671-017-2321-4 |
| Publisher version: | https://doi.org/10.1186/s11671-017-2321-4 |
| Language: | English |
| Additional information: | Copyright © The Author(s) 2017. Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| Keywords: | Spintronics, Ballistic transport, Transverse electron focusing |
| 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.ucl.ac.uk/id/eprint/1575533 |
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