Volume 126, Number 6, June 2019
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||24 July 2019|
Sub-periods and apparent pairing in integer quantum Hall interferometers
1 Max Planck Institute for Mathematics in the Sciences - D-04103, Leipzig, Germany
2 Institut für Theoretische Physik, Universität Leipzig - D-04103, Leipzig, Germany
3 Niels Bohr Institute, University of Copenhagen - DK-2100 Copenhagen, Denmark
Received: 27 March 2019
Accepted: 24 June 2019
We analyse the magnetic field and gate voltage dependence of the longitudinal resistance in an integer quantum Hall Fabry-Pérot interferometer, taking into account the interactions between an outermost interfering edge mode, an inner non-interfering edge mode and the bulk. For weak bulk-edge coupling and sufficiently strong inter-edge interaction, we obtain that the interferometer operates in the Aharonov-Bohm regime with a flux periodicity halved with respect to the usual expectation. Even in the regime of strong bulk-edge coupling, this behaviour can be observed as a sub-periodicity of the interference signal in the Coulomb-dominated regime. We do not find evidence for a connection between a reduced flux period and electron pairing, though. Our results can describe some recent experimental findings.
PACS: 73.43.Cd – Theory and modeling / 85.35.Ds – Quantum interference devices / 73.23.Hk – Coulomb blockade; single-electron tunneling
© EPLA, 2019
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.