Charge-density waves in one-dimensional Hubbard superlattices

Abstract

We study the formation of charge density waves (CDW's) in one-dimensional Hubbard superlattices, modeled by a repeated pattern of repulsive (U>0) and free (U=0) sites. By means of Lanczos diagonalizations for the ground state, we calculate the charge structure factor. Our results show that while the superlattice structure affects the modulation of the charge density waves, the periodicity can still be predicted through an effective density. We also show that, for a fixed repulsive layer thickness, the periodicity of the CDW is an oscillatory function of the free layer thickness.

4 pages, 4 figures

References in corpus (1)

• Luttinger liquid superlattices: realization of gapless insulating phases

Cited by in corpus (13)

• Exceptional points in the one-dimensional Hubbard model
• Effects of nanoscale spatial inhomogeneity in strongly correlated systems
• Mobility edge phenomenon in a Hubbard chain: A mean field study
• Destruction of Superconductivity by Impurities in the Attractive Hubbard Model
• Giant Magnetoresistance in Hubbard Chains
• Modulation of charge-density waves by superlattice structures
• Electric field induced localization phenomena in a ladder network with superlattice configuration: Effect of backbone environment
• Competition between local potentials and attractive particle-particle interactions in superlattices
• Site-selective doublon-holon dynamics in a pumped one-dimensional Hubbard superlattice with staggered Coulomb interactions
• Effect of spatial inhomogeneity on the mapping between strongly interacting fermions and weakly interacting spins
• Ground state phase diagram and magnetoconductance of a one-dimensional Hubbard superlattice at half-filling
• Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices
• Laser-Induced Commensurate-Incommensurate Transition of Charge Order in a Hubbard Superlattice