Metal-Insulator Transition in a Hubbard Chain: A Mean Field Study

Details Metal-Insulator Transition in a Hubbard Chain: A Mean Field Study Metal-Insulator Transition in a Hubbard Chain: A Mean Field Study

2012-03-06

arxiv.org/abs/1203.1249v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

We show that a tight-binding one-dimensional chain composed of interacting and non-interacting atomic sites can exhibit a metal-insulator transition at multiple values of Fermi 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.

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