Optical properties within the Q1D multiband models - the transverse equation of motion approach

Kupčić, Ivan and Barišić, Slaven (2005) Optical properties within the Q1D multiband models - the transverse equation of motion approach. Fizika A, 14 (1). pp. 47-74. ISSN 1330-0008

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Abstract

The electrodynamic features of the multiband model are examined using the transverse equation of motion approach in order to give the explanation of several long-standing problems. It turns out that the exact summation of the most singular terms in powers of 1/ω^n leads to the total optical conductivity which, in the zero-frequency limit, reduces to the results of the Boltzmann equation, both for the metallic and semiconducting two-band regime. The detailed calculations have been carried out for the quasi-one-dimensional (Q1D) two-band model corresponding to the imperfect charge-density-wave (CDW) nesting. It is also shown that the results of the present treatment of the impurity-scattering processes for the DC conductivity of the ordered CDW state are in agreement with the experimental observation. Finally, the DC and optical conductivity are calculated numerically for a few typical Q1D cases.

Item Type: Article
Keywords: optical properties, CDW systems, multiband models, transverse response theory
Date: 2005
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 15 Apr 2014 17:03
Last Modified: 15 Apr 2014 17:03
URI: http://digre.pmf.unizg.hr/id/eprint/851

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