Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 4: Low-Dimensional Systems: 1D - Theory

TT 4.11: Vortrag

Montag, 31. März 2014, 12:15–12:30, HSZ 201

Spin and charge dynamics of Hubbard chains with Rashba spin-orbit coupling — •Florian Goth and Fakher F. Assaad — Institut für theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany

Interacting one-dimensional electrons have attracted considerable interest since the strong confinement marks the breakdown of the usual nearly free electron picture that is valid in higher dimensions. The experimental realization of these systems is often realized by considering adatoms on surfaces. Thereby, inversion symmetry is broken and a minimal model to capture the correlation physics is a Hubbard chain supplemented by a Rashba type spin-orbit interaction. We study this system using Quantum Monte Carlo methods as a function of doping and spin-orbit coupling strength. We present results on spin and charge dynamics as well as the single particle spectral functions.