Oitmaa J
School of Physics, The University of New South Wales, Sydney, NSW 2052, Australia.
J Phys Condens Matter. 2018 Apr 18;30(15):155801. doi: 10.1088/1361-648X/aab22c. Epub 2018 Feb 26.
We investigate ground-state and high-temperature properties of the nearest-neighbour Heisenberg antiferromagnet on the three-dimensional diamond lattice, using series expansion methods. The ground-state energy and magnetization, as well as the magnon spectrum, are calculated and found to be in good agreement with first-order spin-wave theory, with a quantum renormalization factor of about 1.13. High-temperature series are derived for the free energy, and physical and staggered susceptibilities for spin S = 1/2, 1 and 3/2, and analysed to obtain the corresponding Curie and Néel temperatures.
我们使用级数展开方法研究了三维金刚石晶格上最近邻海森堡反铁磁体的基态和高温性质。计算了基态能量、磁化强度以及磁振子谱，发现它们与一阶自旋波理论吻合良好，量子重整化因子约为1.13。推导了自旋(S = 1/2)、1和3/2时自由能、物理磁化率和交错磁化率的高温级数，并进行分析以得到相应的居里温度和奈尔温度。
