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Title: Edge State Propagation Direction in the Fractional Quantum Hall Regime: Multi-Terminal Magnetocapacitance Experiment

Abstract

The propagation direction of fractional quantum Hall effect (FQHE) edge states has been investigated experimentally via the symmetry properties of the multi-terminal capacitances of a two dimensional electron gas. Although strong asymmetries with respect to zero magnetic field appear, no asymmetries with respect to even denominator Landau level filling factor {nu} are seen. This indicates that current-carrying FQHE edge states propagate in the same direction as integer QHE edge states. In addition, anomalous capacitance features, indicative of enhanced bulk conduction, are observed at {nu} = 1/2 and 3/2.

Authors:
; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
13079
Report Number(s):
SAND99-2151C
TRN: US0110726
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 13th International Conference on the Electronic Properties of Two-Dimensional Systems, Ottawa, Ontario (CA), 08/01/1999--08/06/1999; Other Information: PBD: 20 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CAPACITANCE; ELECTRON GAS; HALL EFFECT; MAGNETIC FIELDS; ASYMMETRY; ENERGY LEVELS; ELECTRIC CONDUCTIVITY; EDGE STATES; INTEGER AND FRACTIONAL QUANTUM HALL EFFECT

Citation Formats

JOHNSON,B.L., MOON,JEONG-SUN, RENO,JOHN L., and SIMMONS,JERRY A.. Edge State Propagation Direction in the Fractional Quantum Hall Regime: Multi-Terminal Magnetocapacitance Experiment. United States: N. p., 1999. Web.
JOHNSON,B.L., MOON,JEONG-SUN, RENO,JOHN L., & SIMMONS,JERRY A.. Edge State Propagation Direction in the Fractional Quantum Hall Regime: Multi-Terminal Magnetocapacitance Experiment. United States.
JOHNSON,B.L., MOON,JEONG-SUN, RENO,JOHN L., and SIMMONS,JERRY A.. Mon . "Edge State Propagation Direction in the Fractional Quantum Hall Regime: Multi-Terminal Magnetocapacitance Experiment". United States. https://www.osti.gov/servlets/purl/13079.
@article{osti_13079,
title = {Edge State Propagation Direction in the Fractional Quantum Hall Regime: Multi-Terminal Magnetocapacitance Experiment},
author = {JOHNSON,B.L. and MOON,JEONG-SUN and RENO,JOHN L. and SIMMONS,JERRY A.},
abstractNote = {The propagation direction of fractional quantum Hall effect (FQHE) edge states has been investigated experimentally via the symmetry properties of the multi-terminal capacitances of a two dimensional electron gas. Although strong asymmetries with respect to zero magnetic field appear, no asymmetries with respect to even denominator Landau level filling factor {nu} are seen. This indicates that current-carrying FQHE edge states propagate in the same direction as integer QHE edge states. In addition, anomalous capacitance features, indicative of enhanced bulk conduction, are observed at {nu} = 1/2 and 3/2.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 20 00:00:00 EDT 1999},
month = {Mon Sep 20 00:00:00 EDT 1999}
}

Conference:
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