2001/07/05 by J. Silva-Valencia, E. Miranda, Raimundo R. dos Santos
Physics and Astronomy · #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/13/27/102
published as J. Phys.:Condens. Matter 13, L619 (2001) · RevTeX, 5 pages, 3 figures
arxiv created 2001/07/05 · arxiv updated 2009/11/30
We calculate the correlation functions and the DC conductivity of Luttinger liquid superlattices, modeled by a repeated pattern of interacting and free Luttinger liquids. In a specific realization, where the interacting subsystem is a Hubbard chain, the system exhibits a rich phase diagram with four different phases: two metals and two compressible insulators. In general, we find that the effective low energy description amalgamates features of both types of liquids in proportion to their spatial extent, suggesting the interesting possibility of `engineered' Luttinger liquids.