Exact diagonalization study of domain structure in integer filling factor quantum Hall ferromagnets

Abstract

Opposite spin Landau levels in a quantum well can be brought into coincidence by tilting the magnetic field away from normal orientation. We demonstrate that the magnetotransport anomaly at integer filling factors that was recently discovered by Pan {\it et al} is due to such a coincidence. By performing exact diagonalization calculations using microscopically evaluated effective electron-electron interactions, we are able to establish that the electronic ground state at coincidence is an Ising quantum Hall ferromagnet and that the low energy excitations correspond to the formation of a domain wall.

4 pages, 4 figures

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Cited by in corpus (7)

• Magnetoelectric coupling, Berry phase, and Landau level dispersion in a biased bilayer graphene
• Spontaneous Symmetry Breaking and Exotic Quantum Order in Integer Quantum Hall Systems under a Tilted Magnetic Field
• Spin Mode-Switching at the Edge of a Quantum Hall System
• Spectral properties of rotating electrons in quantum dots and their relation to quantum Hall liquids
• Integral and fractional Quantum Hall Ising ferromagnets
• Spin in fractional quantum Hall systems
• Numerical Investigation on Asymmetric Bilayer System at Integer Filling Factor