Spin excitations in the two-dimensional strongly coupled dimer system malachite

The mineral malachite, Cu2(OD)2CO3, has a quantum spin-liquid ground state and no long-range magnetic order down to at least T=0.4 K. Inelastic neutron scattering measurements show that the excitation spectrum consists of dispersive gapped singlet-triplet excitations, characteristic of spin-1/2 di...

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Bibliographic Details
Main Authors: Canevet, E., Fak, B., Kremer, R. K., Chun, J. H., Enderle, M., Gordon, E. E., Bettis, J. L., Whangbo, M. -H., Taylor, J. W., Adroja, D. T.
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Published: 2014
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Online Access:http://arxiv.org/abs/1412.5908
https://dx.doi.org/10.1103/PhysRevB.91.060402