Berlin 2015 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 17: Transport: Topological Insulators 3 (joint session with DS, HL, MA, O)

DS 17.2: Vortrag

Dienstag, 17. März 2015, 14:15–14:30, H 0110

Trasport signatures of a Zeeman-split quantum dot coupled to a helical edge state — •Benedikt Probst¹, Pauli Virtanen², and Patrik Recher¹ — ¹Institut für Mathematische Physik, TU Braunschweig, 38106 Braunschweig, Germany — ²O.V. Lounasmaa Laboratory, Aalto University School of Science, Finland

We investigate the transport signatures of a Zeeman-split quantum dot (QD) containing a single spin 1/2 weakly coupled to a helical Luttinger liquid (HLL) within a generalized master equation approach. The HLL induces a tunable magnetization direction on the QD controlled by an applied bias voltage when the quantization axes of the QD and the HLL are noncollinear. This tunability allows to extract characteristic signatures of a HLL and the spin dynamics of the QD via the backscattering conductance and the current noise.