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

Neumaier, Daniel and Schlapps, M. and Wurstbauer, U. and Sadowski, J. and Reinwald, M. and Wegscheider, Werner and Weiss, Dieter (2008) Electron-electron interaction in one- and two-dimensional ferromagnetic (Ga,Mn)As. PHYSICAL REVIEW B, 77 (4): 041306. ISSN 1098-0121,

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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 20 mK. Here we show that the conductivity decrease follows a ln(T/T(0)) dependency in two-dimensional films and a - 1/root T 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.

Item Type: Article
Uncontrolled Keywords: MAGNETIC SEMICONDUCTORS; TRANSPORT-PROPERTIES; SCALING THEORY; SCATTERING; EXCHANGE;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Depositing User: Dr. Gernot Deinzer
Date Deposited: 23 Nov 2020 09:29
Last Modified: 23 Nov 2020 09:29
URI: https://pred.uni-regensburg.de/id/eprint/31757

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