Observation of Aharonov-Bohm Superperiod in a Laughlin Quasiparticle Interferometer

Details Observation of Aharonov-Bohm Superperiod in a Laughlin Quasiparticle Interferometer Observation of Aharonov-Bohm Superperiod in a Laughlin Quasiparticle Interferometer

2005-04-13

arxiv.org/abs/cond-mat/0504341v2

Phys. Rev. Lett. 95, 246802 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

published version

Scientific paper

10.1103/PhysRevLett.95.246802

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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