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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.

Authors

V. Orsi Gordo

Y.G. Gobato

H.V.A. Galeti

M.J.S.P. Brasil

David Taylor

M. Henini mohamed.henini@nottingham.ac.uk



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.

Journal Article Type Article
Journal Journal of Electronic Materials
Print ISSN 0361-5235
Electronic ISSN 1543-186X
Publisher Humana Press
Peer Reviewed Peer Reviewed
Volume 46
Issue 7
APA6 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), doi:10.1007/s11664-017-5391-2
DOI https://doi.org/10.1007/s11664-017-5391-2
Keywords Quantum rings, photoluminescence, spin polarization, resonant tunneling
Publisher URL https://link.springer.com/article/10.1007%2Fs11664-017-5391-2
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
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

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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