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Title: The circular polarization inversion in δ〈Mn〉/InGaAs/GaAs light-emitting diodes

We investigated light-emitting diodes consisting of an InGaAs/GaAs quantum well adjacent to a ferromagnetic δ〈Mn〉-layer. The magnetic field-dependent circular polarization obtained from both photo- and electroluminescence shows an unusual sign inversion depending on the growth parameters that can be explained by an interplay of the Zeeman splitting and Mn-hole interaction effects. Our results can help to understand the origin and control of the spin polarization on Mn doped GaAs structures, a fundamental step for the development of Mn-based spintronic devices.
Authors:
; ; ; ; ; ;  [1] ; ; ; ; ;  [2]
  1. Physico-Technical Research Institute, Lobachevsky State University of Nizhni Novgorod, 603950 Nizhni Novgorod (Russian Federation)
  2. Instituto de Física 'Gleb Wataghin,' Universidade Estadual de Campinas, 13083-859 Campinas, SP (Brazil)
Publication Date:
OSTI Identifier:
22486384
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONTROL; DOPED MATERIALS; ELECTROLUMINESCENCE; GALLIUM ARSENIDES; HOLES; INDIUM ARSENIDES; LAYERS; LIGHT EMITTING DIODES; MAGNETIC FIELDS; POLARIZATION; QUANTUM WELLS; SPIN ORIENTATION; ZEEMAN EFFECT