Dresden 2011 – wissenschaftliches Programm
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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: Vortrag
Mittwoch, 16. März 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.