The spin-1 anisotropic Heisenberg antiferromagnet on a square lattice at low temperatures

作者：Pires A S T^*

来源：Journal of Magnetism and Magnetic Materials, 2011, 323(15): 1977-1979.

DOI：10.1016/j.jmmm.2011.02.036

• Heisenberg model
• Antiferrromagnet
• Quantum phase transition

In this paper we study the low temperature behavior of the quantum S=1 Heisenberg antiferromagnet with exchange and single-site anisotropies on the square lattice. The properties of the model change drastically as the single-site anisotropy D varies from very small to very large values. A quantum phase transitio

• 出版日期2011-8