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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., Landee, C.P. & Baines, C. (2006). Magnetic order in the quasi-one-dimensional spin-1/2 molecular chain compound copper pyrazine dinitrate. Physical review B 73(2): 020410(R).

Author(s) from Durham


We present evidence of magnetic order in the quasi-one-dimensional spin-1/2 molecular chain compound, copper pyrazine dinitrate Cu(C4H4N2)(NO3)2. Zero field muon-spin relaxation measurements made at dilution refrigerator 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=107(1)mK. This leads to an estimate of the interchain coupling constant of ∣J′∣/kB=0.046K and to a ratio of ∣J′/J∣=4.4×10−3.