Hysteresis, spin transitions, and magnetic ordering in the fractional quantum Hall effect

The effect of a one-dimensional periodic electrostatic modulation on quantum Hall systems with filling factor ν = 1 is studied. We propose that, either when the amplitude of the modulation potential or the tilt angle of the magnetic field is varied, the system can undergo a first-order phase transition from a fully spin-polarized homogeneous state to a partially spin-polarized chargedensity-wave state, and show hysteresis behavior of the spin polarization. This is confirmed by our self-consistent numerical calculations within the Hartree-Fock approximation. Finally we suggest that the ν = 1/3 fractional quantum Hall state may also show similar hysteresis behavior in the presence of a periodic potential modulation.

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Hysteresis effect in theν=1quantum Hall system under periodic electrostatic modulation

Chang

Yang

2001

Phys. Rev. B

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Hysteresis, spin transitions, and magnetic ordering in the fractional quantum Hall effect

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References 16 publications

Hysteresis effect in theν=1quantum Hall system under periodic electrostatic modulation

Hysteresis effect in theν=1quantum Hall system under periodic electrostatic modulation

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