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Durham University

Department of Physics

Staff profile

Publication details for Professor Tom Lancaster

Lancaster, T., Blundell, S.J., Brooks, M.L., Baker, P.J., Pratt, F.L., Manson, J.L. & Baines, C. (2006). Muon-spin relaxation study of the spin-12 molecular chain compound Cu(HCO2)2(C4H4N2). Physical review B 73(17): 172403.

Author(s) from Durham


We present the results of a muon-spin relaxation (μ+SR) study of magnetic order in the quasi-one-dimensional spin-1/2 molecular chain compound Cu(HCO2)2(C4H4N2). Zero-field μ+SR measurements at low temperatures show oscillations in the measured asymmetry, characteristic of a quasistatic magnetic field at the muon sites. Our measurements provide convincing evidence for long-range magnetic order below a temperature TN=1.97(8)K. This leads to an estimate of the interchain coupling constant of ∣J′∣/kB=1.27K and to a ratio ∣∣J′/J∣=1.6×10−1.