aqora

High-temperature expansion of the spin polarization in the quantum Hall regime at filling factor ν= 1

Marcus Kasner

Physica E Low-dimensional Systems and NanostructuresJan 1, 19975 citations

SU(4) coherent effects to the canted antiferromagnetic phase in bilayer quantum Hall systems at ν=2

Kazuki Hasebe

arXiv:cond-mat/0302377Physics Letters ANov 15, 20030 citations

p-Wave Pairing in QuantumHall Bilayers

Zlatko Papić, V. Milovanović

We show that the wave functions that describe the ground states of putative p-wave-paired phases in quantum Hall bilayers, like the Pfaffian at νT = 1/2 or the paired phase at νT = 1, are more likely to describe the excited states of Fermi liquids at these filling factors. We point out to the close competition between Fermi liquid and paired phases, which leads to the conclusion that in the experiments only direct transitions from the correlated 111 and 331 states into Fermi liquid(s) are likely to be observed.We show that the wave functions that describe the ground states of putative p-wave-paired phases in quantum Hall bilayers, like the Pfaffian at νT = 1/2 or the paired phase at νT = 1, are more likely to describe the excited states of Fermi liquids at these filling factors. We point out to the close competition between Fermi liquid and paired phases, which leads to the conclusion that in the experiments only direct transitions from the correlated 111 and 331 states into Fermi liquid(s) are likely to be observed.

Jan 1, 20140 citations

PHASE DIAGRAM OF THE ν = 2 BILAYER QUANTUM HALL STATE

Akira Fukuda, A. Sawada, K. IWATA +6 more

International Symposium on Mesoscopic Superconductivity and Spintronics (MS+S)Oct 1, 20080 citations

On the quantum phase transition of a quantum Hall liquid

Adriaan M. J. Schakel

Nuclear Physics BOct 1, 19954 citations

Numeric and Analytic Investigation on Phase Diagrams and Phasetransitions of the ν = 2/3 Bilayer Fractional Quantum Hall Systems

Yangdong Zheng, T. Sorita

The phase diagrams and phase transitions of a typical bilayer fractional quantum Hall (QH) system with filling factor ν = 2/3 at the layer balanced point are investigated theoretically by finite size exact-diagonalization calculations and an exactly solvable model. We find some basic features essentially different from the bilayer integer QH systems at ν = 2, reflecting the special characteristics of the fractional QH systems. The degeneracy of the ground states occurs depending on the difference between intralayer and interlayer Coulomb energies, when interlayer tunneling energy (ΔSAS) gets close to zero. The continuous transitions of the finite size systems between the spin-polarized and spin-unpolarized phases are determined by the competition between the Zeeman energy (ΔZ) and the electron Coulomb energy, and are almost not affected by ΔSAS.The phase diagrams and phase transitions of a typical bilayer fractional quantum Hall (QH) system with filling factor ν = 2/3 at the layer balanced point are investigated theoretically by finite size exact-diagonalization calculations and an exactly solvable model. We find some basic features essentially different from the bilayer integer QH systems at ν = 2, reflecting the special characteristics of the fractional QH systems. The degeneracy of the ground states occurs depending on the difference between intralayer and interlayer Coulomb energies, when interlayer tunneling energy (ΔSAS) gets close to zero. The continuous transitions of the finite size systems between the spin-polarized and spin-unpolarized phases are determined by the competition between the Zeeman energy (ΔZ) and the electron Coulomb energy, and are almost not affected by ΔSAS.

Journal of Applied Mathematics and PhysicsJan 1, 20180 citations

Phase transition and spin–wave dispersion in quantum Hall bilayers at filling factor ν=1

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