Study of the charge correlation function in one-dimensional Hubbard heterostructures

Details Study of the charge correlation function in one-dimensional Hubbard heterostructures Study of the charge correlation function in one-dimensional Hubbard heterostructures

2008-04-24

arxiv.org/abs/0804.3950v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 7 figures

Scientific paper

10.1103/PhysRevB.78.115425

We study inhomogeneous one-dimensional Hubbard systems using the density matrix renormalization group method. Different heterostructures are investigated whose configuration is modeled varying parameters like the on-site Coulomb potential and introducing local confining potentials. We investigate their Luttinger liquid properties through the parameter K_rho, which characterizes the decay of the density-density correlation function at large distances. Our main goal is the investigation of possible realization of engineered materials and the ability to manipulate physical properties by choosing an appropriate spatial and/or chemical modulation.

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