Fourth-order green's-function decoupling for one-dimensional antiferromagnets application to optical properties of (CD3)4NMnCl3 (TMMC)

S. K. Lo, J W Halley

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Abstract

We present a fourth-order Green's-function decoupling theory for the description of optical properties in the one-dimensional antiferromagnetically coupled Heisenberg paramagnet TMMC [(CD3)4NMmCl3]. Analysis of the crystal structure shows that Raman scattering in the "two-spin-wave" mode is expected to be weak, so we present detailed predictions only for infrared absorption. A truncation approximation is introduced to solve the Green's-function equations. The relationship of this work to theories of Kawasaki, Elliott, and Thorpe, and Blume and Hubbard is discussed.

Original languageEnglish (US)
Pages (from-to)5272-5281
Number of pages10
JournalPhysical Review B
Volume8
Issue number11
DOIs
StatePublished - 1973

Bibliographical note

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Copyright 2015 Elsevier B.V., All rights reserved.

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