Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices

Details Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices

2008-10-31

arxiv.org/abs/0810.5624v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 8 figures. accepted in Journal of Physics: Condensed Matter

Scientific paper

10.1088/0953-8984/21/1/015302

We have studied the ground state of the one dimensional Hubbard superlattice structures with different unit cell sizes in the presence of electric field. Self consistent Hartree-Fock approximation calculation is done in the weak to intermediate interaction regime. Studying the charge gap at the Fermi level and the charge density structure factor, we get an idea how the charge modulation on the superlattice is governed by the competition between the electronic correlation and the external electric field.

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