The 120°Ordered Phase of Triangular Lattice Antiferromagnetic Heisenberg Model with Long Range Couplings

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2009,（10）
• 页码范围: 174-176
• 页数: 3页
• 语种: 英文

摘要

In order to look for the 120°order phase of triangular lattice Heisenberg antiferromagnet with long range couplings, the Hamiltonian is diagonalized with the Bogoliubov transformation within linear spin-wave approximation.It is found that when the long range spin couplings are taken into account, the transformation is valid only ordered phase, which is very different from square lattice in terms of shape, size and topological property.