Acceleration of the spin-lattice relaxation in diluted magnetic quantum wells in the presence of a two-dimensional electron gas

A. V. Scherbakov, D. R. Yakovlev, A. V. Akimov, I. A. Merkulov, B. König, W. Ossau, L. W. Molenkamp, T. Wojtowicz, G. Karczewski, G. Cywinski, and J. Kossut
Phys. Rev. B 64, 155205 – Published 27 September 2001
PDFExport Citation

Abstract

Dynamics of spin-lattice relaxation of magnetic Mn ions in semimagnetic Cd0.99Mn0.01Te/Cd0.76Mg0.24Te quantum wells containing two-dimensional electron gas (2DEG) has been studied by means of an optical detection of injected nonequilibrium phonons. It is found that the spin-lattice relaxation rate is an increasing function of electron concentration and electron temperature. The 2DEG provides an effective channel for the energy transfer from magnetic ions to the lattice. A model accounting for the spin-flip transitions between Mn ions and free electrons describes well our experimental results in a qualitative manner.

  • Received 2 March 2001

DOI:https://doi.org/10.1103/PhysRevB.64.155205

©2001 American Physical Society

Authors & Affiliations

A. V. Scherbakov1, D. R. Yakovlev1,2, A. V. Akimov1, I. A. Merkulov1, B. König2, W. Ossau2, L. W. Molenkamp2, T. Wojtowicz3, G. Karczewski3, G. Cywinski3, and J. Kossut3

  • 1A. F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
  • 2Physikalisches Institut der Universität Würzburg, 97074 Würzburg, Germany
  • 3Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland

References (Subscription Required)

Click to Expand
Issue

Vol. 64, Iss. 15 — 15 October 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×