Heating of the magnetic ion system in (Zn, Mn)Se/(Zn, Be)Se semimagnetic quantum wells by means of photoexcitation

D. Keller, D. R. Yakovlev, B. König, W. Ossau, Th. Gruber, A. Waag, L. W. Molenkamp, and A. V. Scherbakov
Phys. Rev. B 65, 035313 – Published 19 December 2001
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Abstract

Heating of the spin system of magnetic Mn ions by means of photoexcited carriers has been studied in undoped (Zn, Mn)Se/(Zn, Be)Se multiple quantum well structures. Elevated spin temperature of the magnetic ions has been documented by a suppression of the giant Zeeman splitting of excitonic states measured in photoluminescence and reflectivity spectra. Low densities of photoexcitation (about 1 W/cm2) induce strong heating of the Mn spin system. The heating shows a strong dependence on the Mn content varying from 0.004 to 0.06. It decreases with increasing Mn content due to the shortening of the spin-lattice relaxation time.

  • Received 6 July 2001

DOI:https://doi.org/10.1103/PhysRevB.65.035313

©2001 American Physical Society

Authors & Affiliations

D. Keller, D. R. Yakovlev*, B. König, W. Ossau, Th. Gruber, A. Waag, and L. W. Molenkamp

  • Physikalisches Institut der Universität Würzburg, 97074 Würzburg, Germany

A. V. Scherbakov

  • A. F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia

  • *Also at A. F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia.
  • Present address: Abteilung Halbleiterphysik, Universität Ulm, 89081 Ulm, Germany.

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Vol. 65, Iss. 3 — 15 January 2002

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