Dynamics of the frustrated spin in the low dimensional magnet Co3(OH)2(C4O4)2. (2nd March 2016)

• Record Type: Journal Article
• Authors: Mole, Richard A; Rule, Kirrily C; Yu, Dehong; Stride, John A; Nadeem, M Arif; Wood, Paul T
• Is Part Of: Journal of physics. Volume 28:Number 12(2016)
• Publication Date: 2016-03-02
• Subjects: frustration -- inelastic neutron scattering -- cobalt; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/28/12/126005
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We describe powder inelastic neutron scattering experiments on a porous coordination polymer Co3 (OH)2 (C4 O4 )2, which has two different ordered magnetic phases known to display spin frustrated behaviour, resulting in an idle-spin phase. The moment on each ion is represented by an effective total angular moment J eff = ½. A non-dispersive magnetic mode was observed in the idle-spin phase which is described by a simple dimer model that assumes Δ J = 0. The excitation was found to persist well above the long range ordering temperature into the paramagnetic region. A combination of frustration, the J eff = ½ and low dimensionality may induce these quantum phenomena.