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arXiv · 1307.1146

Microwave Absorption by a Mesoscopic Quantum Hall Droplet

Jennifer Cano·Andrew C. Doherty·Chetan Nayak·David J. Reilly
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Abstract

We consider the absorption of microwaves by a quantum Hall droplet. We show that the number and velocities of charged edge modes can be directly measured from a droplet of known shape. In contrast to standard transport measurements, different edge equilibration regimes can be accessed in the same device. If there is a quantum point contact in the droplet, then quasiparticle properties, including braiding statistics, can be observed. Their effects are manifested as modulations of the microwave absorption spectrum that are, notably, first-order in the tunneling amplitude at the point contact.

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Jennifer Cano, Andrew C. Doherty, Chetan Nayak, David J. Reilly. 2013-07-03. Microwave Absorption by a Mesoscopic Quantum Hall Droplet. https://doi.org/10.1103/physrevb.88.165305

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