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Updated: May 30, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
Energy transport by neutral collective excitations at the quantum Hall edge
E V Deviatov1, A Lorke, G Biasiol
1Institute of Solid State Physics RAS, Chernogolovka, Moscow District 142432, Russia. dev@issp.ac.ru
Abstract:
We use the edge of the quantum Hall sample to study the possibility for counterpropagating neutral collective excitations. A novel sample design allows us to independently investigate charge and energy transport along the edge. We experimentally observe an upstream energy transfer with respect to the electron drift for the filling factors 1 and 1/3. Our analysis indicates that a neutral collective mode at the interaction-reconstructed edge is a proper candidate for the experimentally observed effect.
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