Mansell, R., Laloë, J-B., Holmes, S.N. et al. (5 more authors) (2016) InGaAs spin light emitting diodes measured in the Faraday and oblique Hanle geometries. Journal of Physics D: Applied Physics, 49 (16). p. 165103. ISSN 0022-3727
Abstract
InGaAs quantum well light emitting diodes (LED) with spin-injecting, epitaxial Fe contacts were fabricated using an in situ wafer transfer process where the semiconductor wafer was transferred under ultrahigh vacuum (UHV) conditions to a metals growth chamber to achieve a high quality interface between the two materials. The spin LED devices were measured optically with applied magnetic fields in either the Faraday or the oblique Hanle geometries in two experimental setups. Optical polarizations efficiencies of 4.5% in the Faraday geometry and 1.5% in the Hanle geometry are shown to be equivalent. The polarization efficiency of the electroluminescence is seen to decay as the temperature increases although the spin lifetime remains constant due to the influence of the D’yakonov–Perel’ spin scattering mechanism in the quantum well.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
Keywords: | spin-injection; InGaAs devices; light emitting diode |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 Jul 2016 15:07 |
Last Modified: | 11 Jul 2016 15:07 |
Published Version: | http://dx.doi.org/10.1088/0022-3727/49/16/165103 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/0022-3727/49/16/165103 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:101689 |