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Title: Resonant indirect exchange via spatially separated two-dimensional channel

We apply the resonant indirect exchange interaction theory to explain the ferromagnetic properties of the hybrid heterostructure consisting of a InGaAs-based quantum well (QW) sandwiched between GaAs barriers with spatially separated Mn δ-layer. The experimentally obtained dependence of the Curie temperature on the QW depth exhibits a peak related to the region of resonant indirect exchange. We suggest the theoretical explanation and a fit to this dependence as a result of the two contributions to ferromagnetism—the intralayer contribution and the resonant exchange contribution provided by the QW.
Authors:
 [1] ;  [2] ;  [3] ; ;  [1] ;  [4] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7]
  1. Ioffe Institute, 194021 St. Petersburg (Russian Federation)
  2. (Finland)
  3. (Russian Federation)
  4. P.N. Lebedev Physical Institute, 119991 Moscow (Russian Federation)
  5. Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow (Russian Federation)
  6. Tata Institute of Fundamental Research, Mumbai 400005 (India)
  7. Lappeenranta University of Technology, FI-53851 Lappeenranta (Finland)
Publication Date:
OSTI Identifier:
22483092
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 25; 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; CURIE POINT; EXCHANGE INTERACTIONS; FERROMAGNETISM; GALLIUM ARSENIDES; INDIUM ARSENIDES; LAYERS; PEAKS; QUANTUM WELLS