Quantum spin correlations in an organometallic alternating-sign chain

M. B. Stone, W. Tian, M. D. Lumsden, G. E. Granroth, D. Mandrus, J. H. Chung, N. Harrison, S. E. Nagler

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


High resolution neutron scattering is used to study excitations in the organometallic magnet (CH3)2NH2CuCl3 (DMACuCl3). Combined with bulk magnetization and susceptibility studies, the new results imply that DMACuCl3 is a realization of the S=1/2 alternating antiferromagnetic-ferromagnetic (AFM-FM) chain. Coupled-cluster calculations indicate that the AFM and FM interactions have nearly the same strength, while analysis of scattering intensities shows evidence for interdimer spin correlations. Results are discussed in the context of recent ideas concerning quantum entanglement.

Original languageEnglish
Article number087204
JournalPhysical review letters
Issue number8
Publication statusPublished - 2007 Aug 25
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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