Charge-spin excitations of the Ising-type fractional quantum Hall ferromagnets
- authored by
- Karel Výborný, Annelene F. Dethlefsen, Rolf J. Haug, Arkadiusz Wójs
- Abstract
We study the low-lying excitations from the fractional quantum Hall states at filling factors 2/3 and 2/5 and argue that the charge-carrying excitations involve spin flips, and, in particular, possibly more than one. Energies obtained by exact diagonalization and transport activation gaps measured over a wide range of magnetic fields are invoked. We discuss the relevance of the noninteracting composite-fermion picture where both fractions correspond to the same filling factor 2 of the composite fermions.
- Organisation(s)
-
Institute of Solid State Physics
- External Organisation(s)
-
Czech Academy of Sciences (CAS)
Solar Systems Pty. Ltd.
Wroclaw University of Technology
University of Cambridge
- Type
- Article
- Journal
- Physical Review B - Condensed Matter and Materials Physics
- Volume
- 80
- ISSN
- 1098-0121
- Publication date
- 09.07.2009
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics
- Electronic version(s)
-
https://doi.org/10.1103/PhysRevB.80.045407 (Access:
Closed)
https://doi.org/10.15488/2865 (Access: Open)