Süllow, S.; Wolter, A.U.B.; Feyerherm, R.; Rakoto, H.; Broto, J.M.; Glocke, S.; Klümper, A.; Honecker, A.; Brenig, W.: Magnetization of staggered S = 1/2 antiferromagnetic Heisenberg chain systems. Journal of Physics: Conference Series 51 (2006), p. 183-186
10.1088/1742-6596/51/1/042
Abstract:
The molecule based S = 1/2 antiferromagnetic Heisenberg chain systems Cu Pyrimidine Cu(C4N2H4)(NO3)2(H2O)2 and Cu Benzoate Cu(C6H5COO)2·3H2O, because of the Dzyaloshinskii¿Moriya interaction and a staggering of the g tensor, are characterized by a magnetic principal axis system a′′bc′′ distinct from the crystallographic unit cell. Along a′′ a behavior corresponding to the uniform S = 1/2 antiferromagnetic Heisenberg chain occurs, while along c′′ the effect of g tensor staggering and Dzyaloshinskii¿Moriya interaction are most prominent. Here, we discuss the field and temperature dependent magnetization along a′′ and c′′ of these systems, in particular with respect to the relevance of the inhomogeneity parameter k controlling the ratio between longitudinal and transverse magnetization components.