Fluctuation Conductivity in One-Dimensional Incommensurate Peierls System

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概要

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• The fluctuation conductivity in the incommensurate Peierls system above the transition temperature is calculated in the lowest order of fluctuations so as to satisfy the gauge invariance. Effects of forward electron-scattering due to impurities are taken into account as well as those of backward scattering. It is shown that in the pure limit the coductivity is enhanced by fluctuations like (T - T_c)^<-1/2> when λ>λ_c≈1.2, λ being the dimensionless coupling constant. While in the dirty limit, the conductivity is reduced by fluctuations. Essential features are qualitatively similar to those given by Patton and Sham except λ_c≈1.6 and effects of the forward scattering. Effects of the forward scattering does not affect the result in the pure limit, while the resistivity increased by the forward scattering in the dirty limit.

• 理論物理学刊行会の論文
• 1978-06-25

著者

• Takada S

  Univ. Tsukuba Ibaraki

• Sakai Eijiro

  Institute Of Physics University Of Tsukuba

• Takada Satoshi

  Institute For Solid States Physics University Of Tokyo : Department Of Physics College Of General Education University Of Tokyo

• TAKADA Satoshi

  Department of Physics, Tokyo University of Education, Tokyo

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