Does Luttinger liquid behaviour survive in an atomic wire on a surface?

Details Does Luttinger liquid behaviour survive in an atomic wire on a surface? Does Luttinger liquid behaviour survive in an atomic wire on a surface?

2001-02-15

arxiv.org/abs/cond-mat/0102275v1

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 7 figures. Submitted to J Phys C

Scientific paper

10.1088/0953-8984/13/22/301

We form a highly simplified model of an atomic wire on a surface by the coupling of two one-dimensional chains, one with electron-electron interactions to represent the wire and and one with no electron-electron interactions to represent the surface. We use exact diagonalization techniques to calculate the eigenstates and response functions of our model, in order to determine both the nature of the coupling and to what extent the coupling affects the Luttinger liquid properties we would expect in a purely one-dimensional system. We find that while there are indeed Luttinger liquid indicators present, some residual Fermi liquid characteristics remain.

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