Deligiannakis, V;
Dhomkar, S;
Ji, H;
Pagliero, D;
Kuskovsky, IL;
Meriles, CA;
Tamargo, MC;
(2017)
Spin dynamics of ZnSe-ZnTe nanostructures grown by migration enhanced molecular beam epitaxy.
Journal of Applied Physics
, 121
(11)
, Article 115702. 10.1063/1.4978314.
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Abstract
We study the spin dynamics of ZnSe layers with embedded type-II ZnTe quantum dots using time resolved Kerr rotation (TRKR). Three samples were grown with an increasing amount of Te, which correlates with increased quantum dot (QD) density. Samples with a higher quantum dot density exhibit longer electron spin lifetimes, up to 1 ns at low temperatures. Tellurium isoelectronic centers, which form in the ZnSe spacer regions as a result of the growth conditions, were probed via spectrally dependent TRKR. Temperature dependent TRKR results show that samples with high QD density are not affected by an electron-hole exchange dephasing mechanism.
| Type: | Article |
|---|---|
| Title: | Spin dynamics of ZnSe-ZnTe nanostructures grown by migration enhanced molecular beam epitaxy |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4978314 |
| Publisher version: | http://doi.org/10.1063/1.4978314 |
| 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 Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10054020 |
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