Dresden 2014 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 102: Cold Atomic Gases - Poster Session
TT 102.6: Poster
Donnerstag, 3. April 2014, 15:00–19:00, P2
Dimensional crossover of topological insulators and cold-atom realization of gapless Mott insulators — •Peter P. Orth1, Mathias Scheurer1, and Stephan Rachel2 — 1Institute for Theory of Condensed Matter, Karlsruhe Institute of Technology (KIT), , 76131 Karlsruhe, Germany — 2Institute for Theoretical Physics, TU Dresden, 01062 Dresden, Germany
We propose a realistic cold-atom setup which allows for a dimensional crossover from a two-dimensional quantum spin Hall insulating phase to a three-dimensional strong topological insulator phase by simply tuning the hopping between the layers. We further employ cluster slave-rotor mean-field theory to study the effect of additional Hubbard onsite interactions that give rise to various spin liquid-like phases such as gapless and semi-metallic Mott insulating states.