Observation of Aharonov-Bohm Superperiod in a Laughlin Quasiparticle Interferometer
F. E. Camino, Wei Zhou, V. J. Goldman
TL;DR
This paper reports the observation of an Aharonov-Bohm superperiod of five flux quanta in a Laughlin quasiparticle interferometer, demonstrating the influence of anyonic statistics in fractional quantum Hall systems.
Contribution
It provides experimental evidence of a superperiod in a quasiparticle interferometer, highlighting the role of anyonic interactions in fractional quantum Hall states.
Findings
Observed a 5h/e superperiod in the interferometer
Confirmed the superperiod arises from anyonic statistical interactions
Demonstrated flux creation of quasiparticles in the 2/5 fluid
Abstract
We report an Aharonov-Bohm superperiod of five magnetic flux quanta (5h/e) observed in a Laughlin quasiparticle interferometer, where an edge channel of the 1/3 fractional quantum Hall fluid encircles an island of the 2/5 fluid. This result does not violate the auge invariance argument of the Byers-Yang theorem because the magnetic flux, in addition to affecting the Aharonov-Bohm phase of the encircling 1/3 quasiparticles, creates the 2/5 quasiparticles in the island. The superperiod is accordingly understood as imposed by the anyonic statistical interaction of Laughlin quasiparticles.
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