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Anomalous magnetization of $S$=2 ferromagnetic-antiferromagnetic alternating chain with Ising anisotropy

Strongly Correlated Electrons 2016-04-06 v1

Abstract

We present the first experimental realization of an S=2S=2 ferromagnetic-antiferromagnetic (F-AF) alternating chain in a new Mn-verdazyl complex [Mn(hfac)2_2]\cdot(oo-Py-V) [hfac=1,1,1,5,5,5-hexafluoroacetylacetonate; oo-Py-V=3-(2-pyridyl)-1,5-diphenylverdazyl]. Through the abab initioinitio molecular orbital calculation, magnetization, and ESR measurements, this compound is confirmed to form an S=2S=2 F-AF alternating chain with Ising anisotropy below about 100 K. 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.

Keywords

Cite

@article{arxiv.1503.05633,
  title  = {Anomalous magnetization of $S$=2 ferromagnetic-antiferromagnetic alternating chain with Ising anisotropy},
  author = {H. Yamaguchi and Y. Shinpuku and Y. Kono and S. Kittaka and T. Sakakibara and M. Hagiwara and T. Kawakami and K. Iwase and T. Ono and Y. Hosokoshi},
  journal= {arXiv preprint arXiv:1503.05633},
  year   = {2016}
}

Comments

13 pages, 5 figures