Berlin 2018 – wissenschaftliches Programm
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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.