Transport through a finite Hubbard chain connected to reservoirs

Details Transport through a finite Hubbard chain connected to reservoirs Transport through a finite Hubbard chain connected to reservoirs

1999-03-08

arxiv.org/abs/cond-mat/9903126v1

Phys. Rev. B59, 12240 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, RevTeX, 6 figures, to be published in Phys. Rev. B 59 (1999)

Scientific paper

10.1103/PhysRevB.59.12240

The dc conductance through a finite Hubbard chain of size N coupled to two noninteracting leads is studied at T = 0 in an electron-hole symmetric case. Assuming that the perturbation expansion in U is valid for small N (=1,2,3,...) owing to the presence of the noninteracting leads, we obtain the self-energy at \omega = 0 analytically in the real space within the second order in U. Then, we calculate the inter-site Green's function which connects the two boundaries of the chain, G_{N1}, solving the Dyson equation. The conductance can be obtained through G_{N1}, and the result shows an oscillatory behavior as a function of N. For odd N, a perfect transmission occurs independent of U. This is due to the inversion and electron-hole symmetries, and is attributed to a Kondo resonance appearing at the Fermi level. On the other hand, for even N, the conductance is a decreasing function of N and U.

Affiliated with

Also associated with

No associations

Rating

Transport through a finite Hubbard chain connected to reservoirs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Transport through a finite Hubbard chain connected to reservoirs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport through a finite Hubbard chain connected to reservoirs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-415775