Low-dimensional quantum antiferromagnets are among the best systems for studying effects of quantum fluctuations within interacting systems. The best ID S=1/2 Heisenberg antiferromagnetic system is Cu(pyrazine)(NO3)2, or CuPzN, since it has excellent 1D isolation and an exchange constant (2J/kB = −10.5 K) which permits available fields to saturate the magnetization. Replacing the pyrazine ligands with substituted pyrazines, such as methylpyrazine (mepz), 2,3-dimepz, and 2,5-dimepz, lowers the exchange strengths significantly. We are conducting an in-depth study of the static and dynamic properties of the CuPzN family, including high field magnetization studies and neutron scattering.
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Landee et al. (1999) studied this question.
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