Composite fermion theory of collective excitations in fractional quantum hall effect

R. K. Kamilla, X. G. Wu, J. K. Jain

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The low energy neutral excitations of incompressible fractional quantum Hall states are called collective modes or magnetic excitons. This work shows that the interaction between the quasiparticle and quasihole forming the exciton is well described quantitatively by the unprojected composite fermion theory, except at very small wave vectors. This allows a study of large systems to determine the collective mode dispersions for general fractions up to an overall additive constant. The positions of various minima are explained by analogy to the integer quantum Hall effect.

Original languageEnglish (US)
Pages (from-to)1332-1335
Number of pages4
JournalPhysical review letters
Volume76
Issue number8
DOIs
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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