Dresden 2011 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 31: TR: Nanoelectronics II - Spintronics and Magnetotransport 1 (jointly with HL and MA)

TT 31.4: Talk

Wednesday, March 16, 2011, 11:30–11:45, HSZ 301

Spin and charge transport in magnetically modulated 2DEGs — •Tobias Dollinger¹, Henri Saarikoski¹, Michael Wimmer², and Klaus Richter¹ — ¹Institut für Theoretische Physik, Universtität Regensburg, Germany — ²Instituut-Lorentz, Universiteit Leiden, The Netherlands

We investigate transport properties of disordered mesoscopic conductors in the presence of periodically modulated magnetic field textures. The focus of the work lies on examining the effects due to the resulting spin superstructure which is of relevance in transport experiments on magnetic semiconductor systems with giant Zeeman interaction. Observables like transmission and local spin densities have been calculated by means of a Recursive Greens Function Technique. The numerical results are interpreted within a semiclassical picture. Furthermore, the influence of adiabaticity on the observed transport features such as an anomalous peak in the magnetoconductance, is discussed.