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
TL;DR
This study reports the observation of a quantum magnetization plateau at one-third saturation in a spin-1 triangular-lattice antiferromagnet, supported by experimental measurements and exact diagonalization calculations.
Contribution
It provides new experimental evidence and theoretical analysis of a quantum magnetization plateau in a spin-1 triangular-lattice antiferromagnet.
Findings
Observation of a one-third magnetization plateau
Agreement between experimental data and exact diagonalization
Insights into spin frustration and quantum fluctuations
Abstract
We report the results of magnetization and specific heat measurements on BaNiSbO, 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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