Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba$_3$NiSb$_2$O$_9$

Yutaka Shirata; Hidekazu Tanaka; Toshio Ono; Akira Matsuo; Koichi Kindo; Hiroki Nakano

doi:10.1143/JPSJ.80.093702

Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba$_3$NiSb$_2$O$_9$

Strongly Correlated Electrons 2011-08-24 v2

Authors: Yutaka Shirata , Hidekazu Tanaka , Toshio Ono , Akira Matsuo , Koichi Kindo , Hiroki Nakano

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Abstract

We report the results of magnetization and specific heat measurements on Ba $_3$ NiSb $_2$ O $_9$ , which is a quasi-two-dimensional spin-1 triangular-lattice antiferromagnet. We observed a nonclassical magnetization plateau at one-third of the saturation magnetization that is driven by spin frustration and quantum fluctuation. Exact diagonalization for a 21-site rhombic cluster was performed to analyze the magnetization process. Experimental and calculated results agree well.

Keywords

quantum magnetization plateau spin-1 triangular-lattice antiferromagnet Ba$_3$NiSb$_2$O$_9$ spin frustration quantum fluctuation exact diagonalization

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@article{arxiv.1105.4046,
  title  = {Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba$_3$NiSb$_2$O$_9$},
  author = {Yutaka Shirata and Hidekazu Tanaka and Toshio Ono and Akira Matsuo and Koichi Kindo and Hiroki Nakano},
  journal= {arXiv preprint arXiv:1105.4046},
  year   = {2011}
}

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published in Journal of the Physical Society of Japan 80 (2011) 093702

Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba$_3$NiSb$_2$O$_9$

Abstract

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