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Electron-electron interaction in one- and two-dimensional ferromagnetic (Ga,Mn)As

D. Neumaier, M. Schlapps, U. Wurstbauer, J. Sadowski, M. Reinwald, W. Wegscheider, and D. Weiss
Phys. Rev. B 77, 041306(R) – Published 25 January 2008

Abstract

We investigated the magnetotransport in high quality ferromagnetic (Ga,Mn)As films and wires. At low temperature the conductivity decreases with decreasing temperature without saturation down to 20mK. Here we show that the conductivity decrease follows a ln(TT0) dependency in two-dimensional films and a 1T dependency in one-dimensional wires and is independent of an applied magnetic field. This behavior can be explained by the theory of electron-electron interaction.

  • Figure
  • Figure
  • Received 21 November 2007

DOI:https://doi.org/10.1103/PhysRevB.77.041306

©2008 American Physical Society

Authors & Affiliations

D. Neumaier*, M. Schlapps, U. Wurstbauer, J. Sadowski, M. Reinwald, W. Wegscheider, and D. Weiss

  • Institut für Experimentelle und Angewandte Physik, Universität Regensburg, 93040 Regensburg, Germany

  • *daniel.neumaier@physik.uni-regensburg.de
  • Present address: MAX-Laboratory, Lund University, SE-221 00, Lund, Sweden.

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Issue

Vol. 77, Iss. 4 — 15 January 2008

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