Mobility edge phenomenon in a Hubbard chain: A mean field study

Santanu K. Maiti*, Abraham Nitzan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We show that a tight-binding one-dimensional chain composed of interacting and non-interacting atomic sites can exhibit multiple mobility edges at different values of carrier energy in presence of external electric field. Within a mean field Hartree-Fock approximation we numerically calculate two-terminal transport by using Green's function formalism. Several cases are analyzed depending on the arrangements of interacting and non-interacting atoms in the chain. The analysis may be helpful in designing mesoscale switching devices.

Original languageEnglish
Pages (from-to)1205-1209
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume377
Issue number16-17
DOIs
StatePublished - 15 Jul 2013

Keywords

  • 1D superlattice geometry
  • Mean field approach
  • Mesoscale switch
  • Mobility edge

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