Dong, Jason T;
Gul, Yilmaz;
Engel, Aaron N;
van Schijndel, Teun AJ;
Dempsey, Connor P;
Pepper, Michael;
Palmstrøm, Christopher J;
(2024)
Enhanced mobility of ternary InGaAs quantum wells through digital alloying.
Physical Review Materials
, 8
(6)
, Article 064601. 10.1103/physrevmaterials.8.064601.
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Abstract
High In content InGaAs quantum wells (In ≥ 75%) are potentially useful for topological quantum computing and spintronics applications. In high-mobility InGaAs quantum wells, alloy disorder scattering is a limiting factor. In this paper, we demonstrate that by growing the InGaAs quantum wells as a digital alloy, or a short period superlattice, we can reduce the alloy disorder scattering within the quantum well and increase the peak 2 K electron mobility to 545000 cm2/Vs, which is the highest reported mobility for high-In content InGaAs quantum wells to the best of the authors' knowledge. Our results demonstrate that the digital alloy approach can be used to increase the mobility of quantum wells in random alloy ternary materials.
| Type: | Article |
|---|---|
| Title: | Enhanced mobility of ternary InGaAs quantum wells through digital alloying |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevmaterials.8.064601 |
| Publisher version: | https://doi.org/10.1103/physrevmaterials.8.064601 |
| 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 Maths and Physical Sciences 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 > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10194256 |
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