Critical magnetization behaviors of the triangular and Kagome lattice quantum antiferromagnets

Details Critical magnetization behaviors of the triangular and Kagome lattice quantum antiferromagnets Critical magnetization behaviors of the triangular and Kagome lattice quantum antiferromagnets

2011-02-17

arxiv.org/abs/1102.3486v1

Phys. Rev. B 83 (2011) 100405(R)

Physics

Condensed Matter

Materials Science

4 figures, Phys. Rev. B Rapid Communications accepted

Scientific paper

10.1103/PhysRevB.83.100405

We investigate the $S=1/2$ quantum spin antiferromagnets on the triangular and Kagome lattices in magnetic field, using the numerical exact diagonalization. Particularly we focus on an anomalous magnetization behavior of each system at 1/3 of the saturation magnetization. The critical exponent analyses suggest that it is a conventional magnetization plateau on the triangular lattice, while an unconventional phenomenon, called the magnetization ramp, on the Kagome lattice.

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