Excitation spectrum of a dimerized next-neighbor antiferromagnetic chain

Sriram Shastry, B. ; Sutherland, Bill (1981) Excitation spectrum of a dimerized next-neighbor antiferromagnetic chain Physical Review Letters, 47 (13). pp. 964-967. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v47/i13/p964_1

Related URL: http://dx.doi.org/10.1103/PhysRevLett.47.964

Abstract

The excitation spectrum of an antiferromagnetic chain exhibiting the effects of both dimerization and frustration is studied. The method used is based on an exact solution for the doubly degenerate ground state, and views the excitations as propagating defect boundaries between the two exact ground states. These excitations are analogous to "solitons," and can bind into a second type of excitation, analogous to "breathers."

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:50820
Deposited On:26 Jul 2011 14:04
Last Modified:18 May 2016 04:59

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