Perturbation study of the conductance through a finite Hubbard chain

Details Perturbation study of the conductance through a finite Hubbard chain Perturbation study of the conductance through a finite Hubbard chain

1999-06-19

arxiv.org/abs/cond-mat/9906304v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

2 pages, LaTeX, submitted to LT22 (Physica B)

Scientific paper

10.1016/S0921-4526(99)03058-6

Transport through a Hubbard chain of size N (=1,2,3,...) connected to reservoirs is studied at T = 0 in an electron-hole symmetric case based on the second-order perturbation theory in U. The result shows a typical even-odd property corresponding to a Kondo or Mott-Hubbard physics. In this report, specifically, we study the dependence of the conductance on the coupling between the chain and reservoirs, which was not examined in detail in our previous report [Phy. Rev. B 59, 12240 (1999)].

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