Phonon excitations of composite-fermion Landau levels

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Schulze-Wischeler, F.; Hohls, F.; Zeitler, U.; Reuter, D.; Wieck, A.D.; Haug, R.J.: Phonon excitations of composite-fermion Landau levels. In: Physical Review Letters 93 (2004), Nr. 2, 26801. DOI: https://doi.org/10.1103/PhysRevLett.93.026801

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Sum total of downloads: 89




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Abstract: 
The phonon excitations of fractional quantum Hall (FQH) states at filling factors ν =1÷3,2÷5, 4÷7, 3÷5, 4÷3, and 5÷3 were investigated. The excitations were found to be based on Landau-level transitions of composite fermions (CF). It was observed that at filling factor ν = 2÷3, a linear field dependence of the excitation energy in the high field regime showed a spin transition, which was excited by the phonons. All the transport gaps, except the one measured at ν = 2÷3, were found to be lower than the phonon excitation gaps due to disorder effects and because temperature was also coupled to spin flip excitations.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2004
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 46 51.69%
2 image of flag of United States United States 19 21.35%
3 image of flag of China China 10 11.24%
4 image of flag of Ireland Ireland 4 4.49%
5 image of flag of France France 2 2.25%
6 image of flag of Australia Australia 2 2.25%
7 image of flag of Taiwan Taiwan 1 1.12%
8 image of flag of Netherlands Netherlands 1 1.12%
9 image of flag of Indonesia Indonesia 1 1.12%
10 image of flag of Canada Canada 1 1.12%
    other countries 2 2.25%

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