Regensburg 2013 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 11: Quantum information systems: mostly quantum dots
HL 11.7: Vortrag
Montag, 11. März 2013, 13:30–13:45, H16
Controllable spin environments in carbon based systems — •Moritz Fuchs1, John Schliemann2, and Björn Trauzettel1 — 1Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, D-97074 Würzburg — 2Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg
Carbon based quantum dots are promising candidates for the investigation of electron spin dynamics in a nuclear spin environment. While isotopic purification offers a way to control the number of involved nuclear spins, the coupling between these spins and the electron spin changes with the shape of the quantum dot. We analyze the time evolution of a single electron spin bound to a graphene quantum dot for exemplary models using both analytical and numerical methods.