Dresden 2011 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 38: Poster Session Transport
TT 38.17: Poster
Mittwoch, 16. März 2011, 14:00–18:00, P3
Geometry Dependent Spin Conductance in Quantum Dots with Spin-Orbit Interaction — •Vitalij Lutsker1, Inanc Adagideli2, Matthias Scheid1, and Klaus Richter1 — 1Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany — 2Faculty of Engineering and Natural Sciences, Sabanci University, 34956 Istanbul, Turkey
In a recent publication[1] it was demonstrated that the average two-terminal spin conductance of a cavity with Rashba spin-orbit interaction(SOI) depends on the orientation of the vector connecting the two terminals. This effect originates from an effect of the SOI on the electron dynamics, leading to a geometrical correlation, which survives in chaotic and diffusive dots. Here we present a systematic numerical analysis of this effect, based on a recursive Green’s function approach to transport. We study statistics of the spin conductance, its dependence on the number of leads, and the role of additional linear and cubic Dresselhaus terms.
I. Adagideli et al., Phys. Rev. Lett., in print (2010); arXiv:1008.4656