Evidence for exhaustion in the conductivity of the infinite-dimensional periodic Anderson model

Details Evidence for exhaustion in the conductivity of the infinite-dimensional periodic Anderson model Evidence for exhaustion in the conductivity of the infinite-dimensional periodic Anderson model

1999-09-23

arxiv.org/abs/cond-mat/9909331v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 4 figures, To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.60.10782

Monte Carlo-maximum entropy calculations of the conductivity of the infinite-dimensional periodic Anderson model are presented. We show that the optical conductivity displays anomalies associated with the exhaustion of conduction-band states near the Fermi energy including a Drude weight which rises with temperature, with weight transferred from a temperature and doping-dependent mid-IR peak and a low-frequency incoherent contribution. Both the Drude and mid-IR peaks persist up to very high temperatures. The resistivity displays a non-universal peak and two other regions associated with impurity-like physics at high temperatures and Fermi Liquid formation at low T.

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