Resonant indirect exchange via spatially separated two-dimensional channel

Journal Article · Mon Jun 22 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4922806· OSTI ID:22483092

Krainov, I. V.; Averkiev, N. S. ^[1]; Aronzon, B. A. ^[2]; Davydov, A. B. ^[2]; Kugel, K. I. ^[3]; Tripathi, V. ^[4]; Lähderanta, E. ^[5]

---

1. Ioffe Institute, 194021 St. Petersburg (Russian Federation)
2. P.N. Lebedev Physical Institute, 119991 Moscow (Russian Federation)
3. Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412 Moscow (Russian Federation)
4. Tata Institute of Fundamental Research, Mumbai 400005 (India)
5. Lappeenranta University of Technology, FI-53851 Lappeenranta (Finland)

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.

• OSTI ID: 22483092
• Journal Information: Applied Physics Letters, Vol. 106, Issue 25; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURIE POINT
EXCHANGE INTERACTIONS
FERROMAGNETISM
GALLIUM ARSENIDES
INDIUM ARSENIDES
LAYERS
PEAKS
QUANTUM WELLS