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Role of Exciton Screening in the 7/3 Fractional Quantum Hall Effect
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
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2013 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 110, no 18, 186801- p.Article in journal (Refereed) Published
Abstract [en]

The excitations of the 7/3 fractional Hall state, one of the most prominent states in the second Landau level, are not understood. We study the effect of screening by composite fermion excitons and find that it causes a strong renormalization at 7/3, thanks to a relatively small exciton gap and a relatively large residual interaction between composite fermions. The excitations of the 7/3 state are to be viewed as composite fermions dressed by a large exciton cloud. Their wide extent has implications for experiments as well as for analysis of finite system exact diagonalization studies.

Place, publisher, year, edition, pages
2013. Vol. 110, no 18, 186801- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-91306DOI: 10.1103/PhysRevLett.110.186801ISI: 000319014400007OAI: oai:DiVA.org:su-91306DiVA: diva2:633336
Funder
EU, FP7, Seventh Framework Programme, PCIG09-GA-2011-294186
Note

AuthorCount:5;

Available from: 2013-06-26 Created: 2013-06-24 Last updated: 2017-12-06Bibliographically approved

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Sreejith, Ganesh Jaya
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