Universal subgap optical conductivity in quasi-one-dimensional Peierls systems

Дата и время публикации : 1993-11-11T21:29:04Z

Авторы публикации и институты :
Kihong Kim (The Ohio State University)
Ross H. McKenzie (The Ohio State University)
John W. Wilkins (The Ohio State University)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 11 pages (+ 3 figures), LATEX (REVTEX 3.0)
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: Quasi-one-dimensional Peierls systems with quantum and thermal lattice fluctuations can be modeled by a Dirac-type equation with a Gaussian-correlated off-diagonal disorder. A powerful new method gives the exact disorder-averaged Green function used to compute the optical conductivity. The strong subgap tail of the conductivity has a universal scaling form. The frequency and temperature dependence of the calculated spectrum agrees with experiments on KCP(Br) and trans-polyacetylene.

Category: Physics