论文标题

Spin-1/2等同步的基础状态和热力学特性Heisenberg Triangles v $ _6 $样磁分子

Ground state and thermodynamic properties of spin-1/2 isosceles Heisenberg triangles for V$_6$-like magnetic molecules

论文作者

Torrico, J., Plascak, J. A.

论文摘要

通过精确的对角线研究,研究了两个耦合等轴心三角形三角形的Spin-1/2 Hamiltonian Heisenberg Triangles,非常适合描述V $ _6 $ -type磁性分子。在零温度下的量子相变图作为理论参数的函数获得。还获得了零温度磁化,作为外部磁场的函数。还计算了磁化强度,熵,敏感性和特定热的热力学行为(随温度的函数),并分析了对哈密顿参数的各种值的相应磁化效应。

The spin-1/2 Hamiltonian for two coupled isosceles Heisenberg triangles, which is well suited for describing the V$_6$-type magnetic molecules, is studied by exact diagonalization. The quantum phase transition diagram, at zero temperature, is obtained as a function of the theoretical parameters. The zero temperature magnetization is also obtained as a function of the external magnetic field. The thermodynamic behavior of the magnetization, entropy, susceptibility, and specific heat, as a function of temperature, are also computed and the corresponding magnetocaloric effect analyzed for various values of the Hamiltonian parameters.

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