Incommensurate structure factor in a hole-doped spin-1 system

Bose, Indrani ; chattopadhyay, Emily (2001) Incommensurate structure factor in a hole-doped spin-1 system International Journal of Modern Physics B (IJMPB), 15 (19-20). pp. 2535-2548. ISSN 0217-9792

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Official URL: http://www.worldscinet.com/ijmpb/15/1519n20/S02179...

Related URL: http://dx.doi.org/10.1142/S0217979201006355

Abstract

The nickelate compound Y₂BaNiO₅ is a spin-1 Haldane-gap antiferromagnet. The compound is doped with holes on replacing the off-chain Y³⁺ ions by Ca²⁺ ions. Inelastic neutron scattering (INS) experiments reveal the existence of sub-gap states on doping. A recent INS experiment provides evidence for an incommensurate double-peaked structure factor S(q) corresponding to the sub-gap states. In this paper, we formulate a microscopic theory for the origin of the incommensurate peaks.

Item Type:	Article
Source:	Copyright of this article belongs to World Scientific Publishing Co Pte Ltd.
ID Code:	6032
Deposited On:	19 Oct 2010 09:45
Last Modified:	16 May 2016 16:27

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