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Media type:
E-Article
Title:
Composite Fermion Theory of Exotic Fractional Quantum Hall Effect
Contributor:
Jain, Jainendra K.
Published:
Annual Reviews, 2015
Published in:
Annual Review of Condensed Matter Physics, 6 (2015) 1, Seite 39-62
Language:
English
DOI:
10.1146/annurev-conmatphys-031214-014606
ISSN:
1947-5454;
1947-5462
Origination:
Footnote:
Description:
The fractional quantum Hall effect (FQHE) arises from strong correlations between electrons when they are confined to two dimensions and exposed to a strong magnetic field. The underlying physics is the formation of topological particles called composite fermions (CFs), electron-vortex bound states whose integer quantum Hall effect explains a large majority of the observed FQHE states. In recent years, the focus has shifted to the more exotic states that originate from a weak residual interaction between composite fermions. These include chiral p-wave paired states of composite fermions at certain even denominator fractions, unconventional FQHE of composite fermions, and a series of CF crystals at low fillings. Aside from these states, we also review the FQHE in multicomponent systems, which has attracted renewed attention because of the observation of well-developed FQHE in several multivalley systems, such as graphene and AlAs quantum wells.