Details
| Original language | English |
|---|---|
| Article number | 165325 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 74 |
| Issue number | 16 |
| Publication status | Published - 31 Oct 2006 |
Abstract
The activation gap Δ of the fractional quantum Hall state at constant filling ν=1/3 is measured in a wide range of perpendicular magnetic field B. Despite the full spin polarization of the incompressible ground state, we observe a sharp crossover between a low-field linear dependence of Δ on B and a Coulomblike square root behavior at large B. From the global gap reduction we get information about the mobility edges in the fractional quantum Hall regime.
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. 74, No. 16, 165325, 31.10.2006.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Signatures of spin in the ν=1/3 fractional quantum Hall effect
AU - Dethlefsen, A. F.
AU - Mariani, E.
AU - Tranitz, H. P.
AU - Wegscheider, W.
AU - Haug, R. J.
PY - 2006/10/31
Y1 - 2006/10/31
N2 - The activation gap Δ of the fractional quantum Hall state at constant filling ν=1/3 is measured in a wide range of perpendicular magnetic field B. Despite the full spin polarization of the incompressible ground state, we observe a sharp crossover between a low-field linear dependence of Δ on B and a Coulomblike square root behavior at large B. From the global gap reduction we get information about the mobility edges in the fractional quantum Hall regime.
AB - The activation gap Δ of the fractional quantum Hall state at constant filling ν=1/3 is measured in a wide range of perpendicular magnetic field B. Despite the full spin polarization of the incompressible ground state, we observe a sharp crossover between a low-field linear dependence of Δ on B and a Coulomblike square root behavior at large B. From the global gap reduction we get information about the mobility edges in the fractional quantum Hall regime.
UR - http://www.scopus.com/inward/record.url?scp=33750357102&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.74.165325
DO - 10.1103/PhysRevB.74.165325
M3 - Article
AN - SCOPUS:33750357102
VL - 74
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 16
M1 - 165325
ER -