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Proceedings Paper

New formalism in evaluation of the ground and few excited states of Hubbard chain nanostructures
Author(s): E. Faizabadi; M. Soleimani
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Paper Abstract

A new, simple and efficient method is presented for calculation of the ground and a few excited states of Hubbard chain nanostructures. By using this method, the photoemission spectral function for organic charge transfer salt TTF-TCNQ, is calculated. For a chain with maximum 70 sites the result is in good agreement with the previous works but there is a difference for further number of sites in the chain, which is discussed in the text with all the specifics. We also show that a source of errors in density matrix renormalization group method for a one dimensional chain is the deficiency of the matrix product scheme for generating the desired states of the linear chain.

Paper Details

Date Published: 15 January 2008
PDF: 8 pages
Proc. SPIE 6831, Nanophotonics, Nanostructure, and Nanometrology II, 68311K (15 January 2008); doi: 10.1117/12.757917
Show Author Affiliations
E. Faizabadi, Iran Univ. of Science and Technology (Iran)
K. N. Toosi Univ. of Technology (Iran)
M. Soleimani, K. N. Toosi Univ. of Technology (Iran)

Published in SPIE Proceedings Vol. 6831:
Nanophotonics, Nanostructure, and Nanometrology II
Xing Zhu; Stephen Y. Chou; Yasuhiko Arakawa, Editor(s)

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