
Pining effect in Pierles doped systems with deviation from halffilling of energy band
M. E. Palistrant^{} ^{} Institute of Applied Physics Academy of Sciences of Moldova
Abstract:
A study is made of the effect of deviation from halffilling of the energy band ($\mu \ne 0$) on the Fröhlich collective mode in onedimensional impurity systems. A low impurity concentration is considered, and the infinite series of impurity scattering is taken into account selfconsistently in the determination of the collective mode Green's function. The conductivity $\sigma (\omega)$ is found in terms of this Green's function, and an analytic expression is obtained for $\sigma (\omega)$ at $\omega \sim \omega _T$ ($\omega _T$ is the pinning frequency). It is shown that for the ratio $\operatorname {Re}\frac {\sigma (\omega)}{\sigma _{\max}}$ a universal formula arises. It differs from the results of Kurihara in the expression for $\omega _T$, which contains an essential dependence on $\mu$ in the incommensurate state of the charge density wave. It is also shown that the width of the peak in the dependence $\sigma (\omega)$ and its position increase with increasing $\mu$.
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Theoretical and Mathematical Physics, 1994, 101:1, 1235–1244
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Received: 30.07.1993
Citation:
M. E. Palistrant, “Pining effect in Pierles doped systems with deviation from halffilling of energy band”, TMF, 101:1 (1994), 110–122; Theoret. and Math. Phys., 101:1 (1994), 1235–1244
Citation in format AMSBIB
\Bibitem{Pal94}
\by M.~E.~Palistrant
\paper Pining effect in Pierles doped systems with deviation from halffilling of energy band
\jour TMF
\yr 1994
\vol 101
\issue 1
\pages 110122
\mathnet{http://mi.mathnet.ru/tmf1673}
\transl
\jour Theoret. and Math. Phys.
\yr 1994
\vol 101
\issue 1
\pages 12351244
\crossref{https://doi.org/10.1007/BF01079261}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=A1994QT57100010}
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http://mi.mathnet.ru/eng/tmf1673 http://mi.mathnet.ru/eng/tmf/v101/i1/p110
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