利用Heisenberg交换作用模型、格林函数法研究了X Y Z模型亚铁磁性Heisenberg系统下的二维长方复式晶格(P211)的自旋波解.通过求解算符的关联函数和热力学系统平均值得到了系统基态的内能U,并分析了系统基态的内能U随自旋量子数、各向...利用Heisenberg交换作用模型、格林函数法研究了X Y Z模型亚铁磁性Heisenberg系统下的二维长方复式晶格(P211)的自旋波解.通过求解算符的关联函数和热力学系统平均值得到了系统基态的内能U,并分析了系统基态的内能U随自旋量子数、各向异性参数X1、X2、X3的变化规律.展开更多
利用Heisenberg交换作用模型,格林函数法研究X Y Z模型亚铁磁性Heisenberg系统下的二维正方复式晶格的自旋波解.通过求解算符的关联函数和热力学系综平均值得到了系统基态的饱和磁化强度MT/M0,并分析了系统基态的饱和磁化强度MT(A,B)/M0...利用Heisenberg交换作用模型,格林函数法研究X Y Z模型亚铁磁性Heisenberg系统下的二维正方复式晶格的自旋波解.通过求解算符的关联函数和热力学系综平均值得到了系统基态的饱和磁化强度MT/M0,并分析了系统基态的饱和磁化强度MT(A,B)/M0(A,B)随自旋量子数,各向异性参数X1,X2,X3的变化规律,得到下列结果:随X1增加,MTA/M0A和MTB/M0B的绝对值减小.随参数X3的增加,A次晶格的基态磁化强度急剧下降的X1位置向后移,B次晶格的基态磁化强度绝对值急剧下降的X1位置也向后移,且B次晶格与A次晶格的基态磁化强度方向相反.展开更多
The magnetization of ternary metal Prussian blue analogues AlxA21-xB, formed by three different sublattices A1, A2 and B, is studied by using the effective-field theory with self-spin correlations. Effects of the mole...The magnetization of ternary metal Prussian blue analogues AlxA21-xB, formed by three different sublattices A1, A2 and B, is studied by using the effective-field theory with self-spin correlations. Effects of the mole fraction x, the anisotropy and the transverse magnetic field on the magnetization are discussed.展开更多
文摘利用Heisenberg交换作用模型,格林函数法研究X Y Z模型亚铁磁性Heisenberg系统下的二维正方复式晶格的自旋波解.通过求解算符的关联函数和热力学系综平均值得到了系统基态的饱和磁化强度MT/M0,并分析了系统基态的饱和磁化强度MT(A,B)/M0(A,B)随自旋量子数,各向异性参数X1,X2,X3的变化规律,得到下列结果:随X1增加,MTA/M0A和MTB/M0B的绝对值减小.随参数X3的增加,A次晶格的基态磁化强度急剧下降的X1位置向后移,B次晶格的基态磁化强度绝对值急剧下降的X1位置也向后移,且B次晶格与A次晶格的基态磁化强度方向相反.
基金Project supported by the Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University,China(Grant No.LZUMMM2010010)the Scientific Foundation of the Educational Department of Liaoning Province,China(Grant No.L2010390)+3 种基金the Natural Science Foundation of Liaoning Province,China(Grant No.20102171)the Scientific Technology Plan of Shenyang,China(Grant No.F10-205-1-33)the Excellent Talents Program of the University of Liaoning Province,China(Grant No.LR201031)the Hong Kong Polytechnic University through the University Research Grant,China(Grant No.A-PA8W)
文摘The magnetization of ternary metal Prussian blue analogues AlxA21-xB, formed by three different sublattices A1, A2 and B, is studied by using the effective-field theory with self-spin correlations. Effects of the mole fraction x, the anisotropy and the transverse magnetic field on the magnetization are discussed.