Astley, MR;
Kataoka, M;
Ford, CJB;
Barnes, CHW;
Anderson, D;
Jones, GAC;
Farrer, I;
... Pepper, M; + view all
(2016)
Non-invasive charge detection in surface-acoustic-wave-defined dynamic quantum dots.
Applied Physics Letters
, 109
(18)
, Article 183501. 10.1063/1.4966667.
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Abstract
Using a non-invasive charge detection method, we detect a flow of electrons trapped in dynamic quantum dots. The dynamic quantum dots are defined by surface acoustic waves (SAWs) and move through a long depleted one-dimensional channel. A one-dimensional constriction is placed next to the SAW channel but in a separate circuit; the current induced by the SAWs through this detector constriction is sensitive to the number of electrons trapped in the SAW minima. We observe steps in the detector acoustoelectric current as the number of electrons carried by SAWs are varied as 1, 2, 3.
| Type: | Article |
|---|---|
| Title: | Non-invasive charge detection in surface-acoustic-wave-defined dynamic quantum dots |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4966667 |
| Publisher version: | http://dx.doi.org/10.1063/1.4966667 |
| Language: | English |
| Additional information: | The following article appeared in: Astley, MR; Kataoka, M; Ford, CJB; Barnes, CHW; Anderson, D; Jones, GAC; Farrer, I; (2016) Non-invasive charge detection in surface-acoustic-wave-defined dynamic quantum dots. Applied Physics Letters, 109 (18), Article 183501, and may be found at: http://dx.doi.org/10.1063/1.4966667. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. |
| 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1529298 |
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