Spin polarization of carriers in InGaAs self-assembled quantum rings inserted in GaAs-AlGaAs resonant tunneling devices

Gordo, V. Orsi; Gobato, Y.G.; Galeti, H.V.A.; Brasil, M.J.S.P.; Taylor, David; Henini, M.

Abstract

In this work, we have investigated transport and polarization resolved photoluminescence (PL) of n-type GaAs-AlGaAs resonant tunneling diodes (RTDs) containing a layer of InGaAs self-assembled quantum rings (QRs) in the quantum well (QW). All measurements were performed under applied voltage, magnetic fields up to 15 T and using linearly polarized laser excitation. It was observed that the QRs’ PL intensity and the circular polarization degree (CPD) oscillate periodically with applied voltage under high magnetic fields at 2 K. Our results demonstrate an effective voltage control of the optical and spin properties of InGaAs QRs inserted into RTDs.

Citation

Gordo, V. O., Gobato, Y., Galeti, H., Brasil, M., Taylor, D., & Henini, M. (in press). Spin polarization of carriers in InGaAs self-assembled quantum rings inserted in GaAs-AlGaAs resonant tunneling devices. Journal of Electronic Materials, 46(7), https://doi.org/10.1007/s11664-017-5391-2

• Journal Article Type: Article
• Acceptance Date: Feb 18, 2017
• Online Publication Date: Mar 2, 2017
• Deposit Date: Mar 31, 2017
• Publicly Available Date: Mar 31, 2017
• Journal: Journal of Electronic Materials
• Print ISSN: 0361-5235
• Electronic ISSN: 1543-186X
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 46
• Issue: 7
• DOI: https://doi.org/10.1007/s11664-017-5391-2
• Keywords: Quantum rings, photoluminescence, spin polarization, resonant tunneling
• Public URL: https://nottingham-repository.worktribe.com/output/848477
• Publisher URL: https://link.springer.com/article/10.1007%2Fs11664-017-5391-2
• Additional Information: (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works
• Contract Date: Mar 31, 2017