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

Neumaier, Daniel and Schlapps, Markus and Wurstbauer, Ursula and Sadowski, J and Reinwald, M and Wegscheider, Werner and Weiss, W (2008) Electron-electron interaction in one- and two-dimensional ferromagnetic (Ga,Mn)As. Physical Review B 77, 041306.

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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/T0) dependency in two-dimensional films and a -1/sqrt(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.

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Item type:Article
Institutions: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
Projects:SFB 689: Spinphänomene in reduzierten Dimensionen
Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Deposited on:25 May 2009 13:18
Last modified:03 Feb 2010 04:10
Item ID:7786
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