Unconventional S=2 alternating chain realized by a metal-radical hybrid-spin approach

Article

关键词: QUANTUM SPIN;    HALDANE-GAP;    MAGNETIZATION PROCESS;    GROUND-STATES;    PHASE;    TRANSITION;    NITROXIDE;    COMPLEXES;    BEHAVIOR;    ORDER;   

DOI  :  10.1103/PhysRevB.93.115145

来源: SCIE

【 摘 要 】

We demonstrate an advanced spin-system design using a hybrid spin consisting of a strongly coupled metal ion and verdazyl radical. Ab initio calculation, magnetization, and ESR measurements evidenced the first realization of an S = 2 ferromagnetic-antiferromagnetic alternating chain with Ising anisotropy in a Mn-verdazyl complex [Mn(hfac)(2)]center dot(o-Py-V) [hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate; o-Py-V = 3-(2-pyridyl)-1,5-diphenylverdazyl]. Furthermore, we find an anomalous change in magnetization at 1/4 of the saturation value, which is probably a manifestation of the quantum nature of the system.

【 授权许可】

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