Yan, C;
KUMAR, S;
Thomas, K;
See, P;
Farrer, I;
Ritchie, D;
Griffiths, J;
... Pepper, M; + view all
(2018)
Coherent Spin Amplification Using a Beam Splitter.
Physical Review Letters
, 120
(13)
, Article 137701. 10.1103/PhysRevLett.120.137701.
Preview |
Text
SpontaneousPolarization.pdf - Accepted Version Download (2MB) | Preview |
Abstract
We report spin amplification using a capacitive beam splitter in n-type GaAs where the spin polarization is monitored via a transverse electron focusing measurement. It is shown that partially spin-polarized current injected by the emitter can be precisely controlled, and the spin polarization associated with it can be amplified by the beam splitter, such that a considerably high spin polarization of around 50% can be obtained. Additionally, the spin remains coherent as shown by the observation of quantum interference. Our results illustrate that spin-polarization amplification can be achieved in materials without strong spin-orbit interaction.
| Type: | Article |
|---|---|
| Title: | Coherent Spin Amplification Using a Beam Splitter |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.120.137701 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.120.137701 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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/10045949 |
Archive Staff Only
 |
View Item |
