Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 36: Correlated Electrons: 1D Theory

TT 36.1: Vortrag

Dienstag, 13. März 2018, 09:30–09:45, HFT-FT 101

Dynamical measurement of the interaction strength in helical Luttinger Liquids — •Tobias Müller¹, Ronny Thomale¹, Björn Trauzettel¹, Erwann Bocquillon², and Oleksiy Kashuba¹ — ¹Institute for Theoretical Physics and Astrophysics, University of Würzburg, D-97074 Würzburg — ²Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité, 75231 Paris Cedex 05

Based on an equations of motion description of helical Luttinger Liquids we propose a setup to measure the interactions inside a one-dimensional wire directly. Using a capacitively coupled gate rather than purely ohmic contacts we can extract the Luttinger parameter both directly and in the low frequency expansion of a frequency-resolved conductivity measurement. We also discuss the influence of the precise form of the change in interactions at ohmic contacts within the setup.