1996/04/03 by R. K. Kamilla, Xiaofeng Wu, X. G. Wu +1 · 35 citations
Physics and Astronomy · #Composite fermion #Composite number #Condensed matter physics #Electron #Exciton #Fermion #Fractional quantum Hall effect #Landau quantization #Magnetic properties of thin films #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #cond-mat
paper · pdf · doi:10.1103/physrevb.54.4873
published in Physical review. B, Condensed matter 54(7), 4873-4884 (American Physical Society) · 40 pages including 13 postscript figures; accepted for publication in Physical Review B (1996); related paper in cond-mat/9511136
arxiv created 1996/04/03 · openalex publication_date 1996/08/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The low-energy excitations of filled Landau levels (LL's) of electrons involve promotion of a single electron from the topmost filled LL to the lowest empty LL. These are called excitons or collective modes. The incompressible fractional quantum Hall states are understood as filled LL's of composite fermions, and the low-energy neutral excitations are excitons of composite fermions. Techniques are developed to study large systems, which provide detailed information about the dispersions of the composite fermion excitons. In particular, it is found that the interaction energy of the exciton is well described by the ``unprojected'' composite fermion theory. \textcopyright 1996 The American Physical Society.