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arXiv · 1105.4046

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
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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.

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Yutaka Shirata, Hidekazu Tanaka, Toshio Ono, Akira Matsuo, Koichi Kindo, Hiroki Nakano. 2011-08-22. Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba$_3$NiSb$_2$O$_9$. https://doi.org/10.1143/jpsj.80.093702

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