Composite Fermion Theory of Collective Excitations in Fractional Quantum Hall Effect
- 19 February 1996
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 76 (8) , 1332-1335
- https://doi.org/10.1103/physrevlett.76.1332
Abstract
The low energy neutral excitations of incompressible fractional quantum Hall states are called collective modes or magnetic excitons. This work develops techniques for computing their dispersion at general filling fractions for reasonably large systems. New structure is revealed; in particular, the collective mode at 1/3 is found to possess several minima, with the energy of the principal minimum significantly smaller than the earlier estimate. \pacs{73.40.Hm, 73.20.Dx, 73.20.Mf}Comment: 4 pages, 3 postscript figureKeywords
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