Thermodynamic Properties of Kagome Antiferromagnets with different Perturbations

Details Thermodynamic Properties of Kagome Antiferromagnets with different Perturbations Thermodynamic Properties of Kagome Antiferromagnets with different Perturbations

2008-09-15

arxiv.org/abs/0809.2621v2

J. Phys.: Conf. Ser. 145, 012003 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 3 figures, proceedings of the HFM 2008 Conference

Scientific paper

10.1088/1742-6596/145/1/012003

We discuss the results of several small perturbations to the thermodynamic properties of Kagome Lattice Heisenberg Model (KLHM) at high and intermediate temperatures, including Curie impurities, dilution, in-plane and out of plane Dzyaloshinski-Moria (DM) anisotropies and exchange anisotropy. We examine the combined role of Curie impurities and dilution in the behavior of uniform susceptibility. We also study the changes in specific heat and entropy with various anisotropies. Their relevance to newly discovered materials ZnCu3(OH)6Cl2 is explored. We find that the magnetic susceptibility is well described by about 6 percent impurity and dilution. We also find that the entropy difference between the material and KLHM is well described by the DM parameter D_z/J~0.1.

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