Exact multielectronic electron-concentration-dependent ground states for disordered two-dimensional two-band systems in the presence of disordered hoppings and finite on-site random interactions

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Abstract

We report exact multielectronic ground states dependent on electron concentration for quantum-mechanical two-dimensional disordered two-band-type many-body models in the presence of disordered hoppings and disordered repulsive finite Hubbard interactions, in fixed lattice topology considered provided by Bravais lattices. The obtained ground states lose their eigenfunction character for independent electron approximation, are perturbatively not connected to the noninteracting but disordered case, and describe a localization-delocalization transition driven by the electron concentration, being highly degenerated and paramagnetic.

Original languageEnglish
Article number054204
Pages (from-to)542041-5420410
Number of pages4878370
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number5
Publication statusPublished - Feb 2004

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Ground state
ground state
Electrons
electrons
interactions
Electron transitions
Eigenvalues and eigenfunctions
Crystal lattices
eigenvectors
topology
Topology
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "We report exact multielectronic ground states dependent on electron concentration for quantum-mechanical two-dimensional disordered two-band-type many-body models in the presence of disordered hoppings and disordered repulsive finite Hubbard interactions, in fixed lattice topology considered provided by Bravais lattices. The obtained ground states lose their eigenfunction character for independent electron approximation, are perturbatively not connected to the noninteracting but disordered case, and describe a localization-delocalization transition driven by the electron concentration, being highly degenerated and paramagnetic.",
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