Spin excitations in the Fractional Quantum Hall regime at \(\nu\lesssim1/3\)

We report inelastic light scattering experiments in the fractional quantum Hall regime at filling factors \(\nu\lesssim1/3\). A spin mode is observed below the Zeeman energy. The filling factor dependence of the mode energy is consistent with its assignment to spin flip excitations of composite ferm...

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Bibliographic Details
Published in:arXiv.org 2006-03
Main Authors: Gallais, Y, Kirschenmann, T H, Hirjibehedin, C F, Dujovne, I, Pinczuk, A, Pfeiffer, L N, West, K W
Format: Article
Language:English
Subjects:
Dependence
Electrons
Excitation
Fermions
Inelastic scattering
Light scattering
Quantum theory
Online Access:Get full text
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Summary:We report inelastic light scattering experiments in the fractional quantum Hall regime at filling factors \(\nu\lesssim1/3\). A spin mode is observed below the Zeeman energy. The filling factor dependence of the mode energy is consistent with its assignment to spin flip excitations of composite fermions with four attached flux quanta (\(\phi\)=4). Our findings reveal a composite fermion Landau level structure in the \(\phi\)=4 sequence.
ISSN:2331-8422
DOI:10.48550/arxiv.0603669