Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session B28: Quantum Gases in Optical Lattices
11:30 AM–2:30 PM,
Monday, March 15, 2021
Sponsoring
Unit:
DAMOP
Chair: Han Pu, Rice Univ
Abstract: B28.00012 : Probing quantum phases and the Hall response in bosonic flux ladders
1:42 PM–1:54 PM
Live
Presenter:
Maximilian Buser
(University of Munich)
Authors:
Maximilian Buser
(University of Munich)
Sebastian Greschner
(University of Geneva)
Claudius Hubig
(Max Planck Institute of Quantum Optics)
Leticia Tarruell
(ICFO The Institute of Photonic Sciences)
Fabian Heidrich-Meisner
(University of Göttingen)
Thierry Giamarchi
(University of Geneva)
Ulrich Joseph Schollwoeck
(University of Munich)
Second, we concentrate on the Hall response. While flux ladders are the most simple lattice models giving rise to the Hall effect, the theoretical description of the ground-state Hall response in these systems remains a tricky problem and an active line of research. We discuss feasible schemes to extend measurements of the Hall polarization to a study of the Hall voltage, allowing for direct comparison with solid state systems. Most importantly, we report on characteristic zero crossings and a remarkable robustness of the Hall voltage with respect to interaction strengths, particle fillings, and ladder geometries, which is unobservable in the Hall polarization.
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