Volume 77, Number 3, February 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 January 2007|
Evidence for the Luttigger liquid density of states in transport across the incompressible stripe at fractional filling factors
Institute of Solid State Physics RAS - Chernogolovka, Moscow District 142432, Russia
2 Laboratorium für Festkörperphysik, Universität Duisburg-Essen - Lotharstr. 1, D-47048 Duisburg, Germany
3 Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum - Universitätsstrasse 150, D-44780 Bochum, Germany
Accepted: 29 November 2006
We experimentally investigate transport across the incompressible stripe at the sample edge in the fractional quantum Hall effect regime at bulk filling factors and . We obtain the dependence of the equilibration length, that is a phenomenological characteristics of the transport, on the voltage imbalance and the temperature, at high voltage imbalances. These dependencies are found to be of the power law form, which is a strong evidence for the Luttigger liquid density of states.
PACS: 73.40.Qv – Metal-insulator-semiconductor structures (including semiconductor- to-insulator) / 71.30.+h – Metal-insulator transitions and other electronic transitions
© Europhysics Letters Association, 2007
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