Magnetization Process of Kagome-Lattice Heisenberg Antiferromagnet

Details Magnetization Process of Kagome-Lattice Heisenberg Antiferromagnet Magnetization Process of Kagome-Lattice Heisenberg Antiferromagnet

2010-04-15

arxiv.org/abs/1004.2528v1

J. Phys. Soc. Jpn. 79 (2010) 053707

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5figures, accepted in J. Phys. Soc. Jpn.

Scientific paper

10.1143/JPSJ.79.053707

The magnetization process of the isotropic Heisenberg antiferromagnet on the kagome lattice is studied. Data obtained from the numerical-diagonalization method are reexamined from the viewpoint of the derivative of the magnetization with respect to the magnetic field. We find that the behavior of the derivative at approximately one-third of the height of the magnetization saturation is markedly different from that for the cases of typical magnetization plateaux. The magnetization process of the kagome-lattice antiferromagnet reveals a new phenomenon, which we call the "magnetization ramp".

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