Dynamics of the frustrated spin in the low dimensional magnet Co3(OH)2(C4O4)2
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Date
2016-03-31
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IOP Publishing
Abstract
We describe powder inelastic neutron scattering experiments on a porous coordination polymer Co3(OH)2(C4O4)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 = 1/2. A non-dispersive magnetic mode was observed in the idle-spin phase which is described by a simple dimer model that assumes ΔJ = 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 = 1/2 and low dimensionality may induce these quantum phenomena. © 2016 IOP Publishing Ltd.
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Keywords
Carbon, Cobalt, Magnets, Spin, Neutrons, Polymers, Ions, Dimers, Paramagnetism, Porosity, Anisotropy, Inelastic scattering
Citation
Mole, R. A., Rule, K. C., Yu, D., Stride, J. A., Nadeem, M. A., & Wood, P. T. (2016). Dynamics of the frustrated spin in the low dimensional magnet Co3(OH)2(C4O4)2. Journal of Physics: Condensed Matter, 28(12), 126005. doi.:10.1088/0953-8984/28/12/126005