Redistributing Chern numbers of Landau subbands: tight-binding electrons under staggered-modulated magnetic fields

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dc.creatorWang, Yi-Fei
dc.creatorGong, Chang-De
dc.date2007-03-19
dc.date.accessioned2026-07-07T07:52:27Z
dc.date.available2026-07-07T07:52:27Z
dc.descriptionWe investigate the magneto-transport properties of electrons on a square lattice under a magnetic field with the alternate flux strength $ϕ\pmΔϕ$ in neighboring plaquettes. A new peculiar behavior of the Hall conductance has been found and is robust against weak disorder: if $ϕ={p\over{2N}}\times{2π}$ ($p$ and $2N$ are coprime integers) is fixed, the Chern numbers of Landau subbands will be redistributed between neighboring pairs and hence the total quantized Hall conductance exhibits a direct transition by $\pm{N}e^2/h$ at critical fillings when $Δϕ$ is increased from 0 up to a critical value $Δϕ_c$. This effect can be an experimental probe of the staggered-flux phase.
dc.description5 pages, 5 figures, 1 table
dc.identifierhttps://arxiv.org/abs/cond-mat/0703479
dc.identifierhttp://arxiv.org/abs/cond-mat/0703479
dc.identifierPhys. Rev. Lett. 98, 096802 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.096802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125883
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleRedistributing Chern numbers of Landau subbands: tight-binding electrons under staggered-modulated magnetic fields
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