Dresden 2020 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 49: Topolectric Circuits and Quantum Hall Systems

TT 49.6: Talk

Wednesday, March 18, 2020, 18:30–18:45, HSZ 103

Microscopic theory of fractional excitations in gapless bilayer quantum Hall states: semi-quantized quantum Hall states — •Tobias Meng — Institut für Theoretische Physik and Würzburg-Dresden Cluster of Excellence ct.qmat, Technische Universität Dresden, 01062 Dresden, Germany

Recent experiments in quantum Hall bilayer systems have revealed a new strongly correlated state: the semi-quantized quantum Hall state. This state arises in a bilayer quantum Hall system with strong interlayer-interactions, has a quantized Hall resistance and vanishing longitudinal resistance, while at the same time featuring a gapless sector that allows this state to exist for a continuum of filling factors. In this talk, I will explain what a semi-quantized quantum Hall state is, and use a coupled-wire construction to predict possible future experiments in the already existing experimental platforms.