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Bloch-Zener oscillations of strongly correlated electrons

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1098-0121, Vol: 86, Issue: 7
2012
  • 22
    Citations
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  • 20
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Metrics Details

  • Citations
    22
    • Citation Indexes
      22
  • Captures
    20

Article Description

It is well known that an electron in a single-band tight-binding lattice coherently driven by an external dc electric field undergoes Bloch oscillations. In the framework of the extended Hubbard model, here it is shown theoretically that two strongly interacting electrons with on-site and nearest-neighbor site repulsion undergo a sequence of Bloch oscillations and Zener tunneling, the so-called Bloch-Zener oscillations (BZOs), among different narrow bands formed by bound particle states. Such a kind of BZOs arise because of nearest-neighbor site particle interaction and are thus rather distinct than BZOs observed for a single electron in biperiodic lattices supporting two single-particle minibands. © 2012 American Physical Society.

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