Light controlled and probed ferromagnetism of (Cd,Mn)Te quantum wells
Kossacki, P.; Kudelski, A.; Gaj, J. A.; Cibert, J.; Tatarenko, S.; Ferrand, D.; Wasiela, A.; Deveaud, B.; Dietl, T.
2002

Abstract

Properties of carrier-induced ferromagnetism in modulation-doped quantum wells of p-type (Cd,Mn)Te are assessed by photoluminescence (PL) and PL excitation spectroscopy. Well-chosen illumination makes it possible to deplete the quantum well and thus to control the strength of the ferromagnetic interactions. Spontaneous local magnetization is proportional to the hole concentration p but the Curie temperature T-C varies little over a wide p range, in agreement with the mean-field model for 2D systems. The spatial extension zeta of ferromagnetic correlation is probed by micro- and time-resolved PL and possible mechanisms controlling zeta below T-C are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

Details

Title Light controlled and probed ferromagnetism of (Cd,Mn)Te quantum wells
Author(s) Kossacki, P. ; Kudelski, A. ; Gaj, J. A. ; Cibert, J. ; Tatarenko, S. ; Ferrand, D. ; Wasiela, A. ; Deveaud, B. ; Dietl, T.
Published in Physica E-Low-Dimensional Systems & Nanostructures
Volume 12
Issue 1-4
Pages 344-350
Date 2002
ISSN 1386-9477
Keywords
Note Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Univ Grenoble 1, Grenoble, France. CNRS, Spectrometrie Phys Lab, Grenoble, France. EPFL, Fed Inst Technol, Dept Phys, IMO, CH-1015 Lausanne, Switzerland. Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland. Polish Acad Sci, Coll Sci, PL-02668 Warsaw, Poland. Kossacki, P, Univ Warsaw, Inst Expt Phys, Hoza 69, PL-00681 Warsaw, Poland.
ISI Document Delivery No.: 545FL
Cited Reference Count: 26
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DOI https://doi.org/10.1016/S1386-9477(01)00273-9
Other identifier(s) DAR: 711
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Laboratories LOEQ
Record Appears in Scientific production and competences > SB - School of Basic Sciences > SB Archives > LOEQ - Laboratory of Quantum Optoelectronics
Peer-reviewed publications
Work produced at EPFL
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Record creation date 2007-08-31

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