Details
| Original language | English |
|---|---|
| Pages (from-to) | 108-111 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 34 |
| Issue number | 1-2 |
| Publication status | Published - 1 Aug 2006 |
Abstract
The activation energy Δ of the fractional quantum Hall state at constant filling factor ν = frac(1, 3) and also at ν = frac(2, 5) and frac(2, 3) has been measured as a function of the perpendicular magnetic field B while modulating the electron density via a top gate. At small magnetic fields we observe a linear increase of Δ with the magnetic field. The slope of Δ vs. B allows us to directly extract the composite fermion g-factor.
Keywords
- 2D electron gas, Activation energy, Fractional quantum Hall effect, Magneto-transport
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 34, No. 1-2, 01.08.2006, p. 108-111.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of spin on the activation energies at ν = 1 / 3
AU - Dethlefsen, A. F.
AU - Mariani, E.
AU - Wegscheider, W.
AU - Haug, R. J.
PY - 2006/8/1
Y1 - 2006/8/1
N2 - The activation energy Δ of the fractional quantum Hall state at constant filling factor ν = frac(1, 3) and also at ν = frac(2, 5) and frac(2, 3) has been measured as a function of the perpendicular magnetic field B while modulating the electron density via a top gate. At small magnetic fields we observe a linear increase of Δ with the magnetic field. The slope of Δ vs. B allows us to directly extract the composite fermion g-factor.
AB - The activation energy Δ of the fractional quantum Hall state at constant filling factor ν = frac(1, 3) and also at ν = frac(2, 5) and frac(2, 3) has been measured as a function of the perpendicular magnetic field B while modulating the electron density via a top gate. At small magnetic fields we observe a linear increase of Δ with the magnetic field. The slope of Δ vs. B allows us to directly extract the composite fermion g-factor.
KW - 2D electron gas
KW - Activation energy
KW - Fractional quantum Hall effect
KW - Magneto-transport
UR - http://www.scopus.com/inward/record.url?scp=33746447788&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2006.02.032
DO - 10.1016/j.physe.2006.02.032
M3 - Article
AN - SCOPUS:33746447788
VL - 34
SP - 108
EP - 111
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 1-2
ER -