Details
| Original language | English |
|---|---|
| Article number | 045407 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 80 |
| Issue number | 4 |
| Publication status | Published - 9 Jul 2009 |
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.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 4, 045407, 09.07.2009.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Charge-spin excitations of the Ising-type fractional quantum Hall ferromagnets
AU - Výborný, Karel
AU - Dethlefsen, Annelene F.
AU - Haug, Rolf J.
AU - Wójs, Arkadiusz
PY - 2009/7/9
Y1 - 2009/7/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=68949131276&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.80.045407
DO - 10.1103/PhysRevB.80.045407
M3 - Article
AN - SCOPUS:68949131276
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 4
M1 - 045407
ER -