Transport gap in a ν=1/3 quantum Hall system: A probe for skyrmions

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dc.identifier.uri Dethlefsen, Annelene F. Haug, Rolf J. Výborný, Karel Čertík, Ondrej Wójs, Arkadiusz 2018-02-23T13:27:25Z 2018-02-23T13:27:25Z 2006
dc.identifier.citation Dethlefsen, A.F.; Haug, R.J.; Výborný, K.; Čertík, O.; Wójs, A.: Transport gap in a ν=1/3 quantum Hall system: A probe for skyrmions. In: Physical Review B 74 (2006), Nr. 19, 195324. DOI:
dc.description.abstract Transport measurements of the activation gap at fractional filling factor 1/3 are compared to results of exact diagonalization, allowing identification of a small anti-skyrmion as the lowest excitation in the low-field regime. In agreement with theory, a crossover to spinless excitations at higher electron densities is observed. Two samples of different quality are investigated. A detailed description of the theoretical calculation of activation gaps is presented and features which should be taken into account are summarized: finite thickness, Landau level mixing, and comparison between different sizes of the model system and-whenever possible-also between different geometries (torus and sphere). Within the chosen model of disorder (entailing a single fit parameter) we obtain a good agreement between calculated energies and experimental results. © 2006 The American Physical Society. eng
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review B 74 (2006), Nr. 19
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject skyrmions eng
dc.subject IQHE eng
dc.subject.ddc 530 | Physik ger
dc.title Transport gap in a ν=1/3 quantum Hall system: A probe for skyrmions eng
dc.type article
dc.type Text
dc.relation.issn 10980121
dc.bibliographicCitation.issue 19
dc.bibliographicCitation.volume 74
dc.bibliographicCitation.firstPage 195324
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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