TY - JOUR
T1 - Magnetotransport study in the layer imbalanced ν = 1 bilayer quantum Hall state
AU - Ogasawara, Y.
AU - Fukuda, A.
AU - Iwata, K.
AU - Sekikawa, T.
AU - Arai, T.
AU - Hirayama, Y.
AU - Ezawa, F.
AU - Sawada, A.
PY - 2009
Y1 - 2009
N2 - We carried out magnetotransport measurements of the charge imbalanced bilayer quantum Hall state (QHS) at the total Landau level filling factor ν = 1 under the titled magnetic fields. Changing the total electron densities nT and the layer imbalance parameter = σ (nf - n b)/(nf + nb), where nf(n b) indicates the density of the front (back) layer, we investigated magnetoresistance near the phase transition point between the charge transferable bilayer QHS and the 1/3+2/3 compound QHS at large in-plane magnetic fields B∥. We measured the thermal activation energy Δ for various nT and θ, and constructed detailed phase diagram in the nT-θ plane at σ = 0.33, including commensurate(C)-like, incommensurate (IC)-like and the compound state. Results indicate that each transition between the compound QHS and the C-like or IC-like phases reflects the pseudospin symmetries.
AB - We carried out magnetotransport measurements of the charge imbalanced bilayer quantum Hall state (QHS) at the total Landau level filling factor ν = 1 under the titled magnetic fields. Changing the total electron densities nT and the layer imbalance parameter = σ (nf - n b)/(nf + nb), where nf(n b) indicates the density of the front (back) layer, we investigated magnetoresistance near the phase transition point between the charge transferable bilayer QHS and the 1/3+2/3 compound QHS at large in-plane magnetic fields B∥. We measured the thermal activation energy Δ for various nT and θ, and constructed detailed phase diagram in the nT-θ plane at σ = 0.33, including commensurate(C)-like, incommensurate (IC)-like and the compound state. Results indicate that each transition between the compound QHS and the C-like or IC-like phases reflects the pseudospin symmetries.
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U2 - 10.1088/1742-6596/150/2/022068
DO - 10.1088/1742-6596/150/2/022068
M3 - Article
AN - SCOPUS:77952482813
VL - 150
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 2
M1 - 022068
ER -