New formalism in evaluation of the ground and few excited states of Hubbard chain nanostructures

E. Faizabadi; M. Soleimani

doi:10.1117/12.757917

15 January 2008 New formalism in evaluation of the ground and few excited states of Hubbard chain nanostructures

E. Faizabadi, M. Soleimani

Proceedings Volume 6831, Nanophotonics, Nanostructure, and Nanometrology II; 68311K (2008) https://doi.org/10.1117/12.757917
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

E. Faizabadi and M. Soleimani "New formalism in evaluation of the ground and few excited states of Hubbard chain nanostructures", Proc. SPIE 6831, Nanophotonics, Nanostructure, and Nanometrology II, 68311K (15 January 2008); https://doi.org/10.1117/12.757917

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