Evidence for ideal insulating/conducting state in a 1D integrable system

Details Evidence for ideal insulating/conducting state in a 1D integrable system Evidence for ideal insulating/conducting state in a 1D integrable system

1995-08-18

arxiv.org/abs/cond-mat/9508078v1

Physics

Condensed Matter

revtex file, followed by 5 uuencoded postscript figures

Scientific paper

10.1103/PhysRevB.53.983

Using numerical diagonalization techniques we analyze the finite temperature/frequency conductance of a one dimensional model of interacting spinless fermions. Depending on the interaction, the observed finite temperature charge stiffness and low frequency conductance indicate a fundamental difference between integrable and non-integrable cases. The integrable systems behave as ideal conductors in the metallic regime and as ideal insulators in the insulating one. The non-integrable systems are, as expected, generic conductors in the metallic regime and activated ones in the insulating regime.

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