Spin polarization of the low-density three-dimensional electron gas
Spin polarization of the low-density three-dimensional electron gas
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DOI：
10.1103/physreve.66.036703
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发表时间：
2002-09-01
影响因子：
2.4
通讯作者：
Ceperley, DM
中科院分区：
文献类型：
--
作者：
Zong, FH;Lin, C;Ceperley, DM
为了确定三维电子气在极低密度和零温度下的自旋极化状态，我们使用具有回流波函数和扭曲平均边界条件的扩散量子蒙特卡罗方法计算能量与自旋极化的关系。我们发现在 r(s) 类似于 50+/-2 处有二阶相变到部分极化相。使用有效的平均场方法（Stoner 模型）估算磁转变温度。
To determine the state of spin polarization of the three-dimensional electron gas at very low densities and zero temperature, we calculate the energy versus spin polarization using diffusion quantum Monte Carlo methods with backflow wave functions and twist averaged boundary conditions. We find a second-order phase transition to a partially polarized phase at r(s)similar to50+/-2. The magnetic transition temperature is estimated using an effective mean-field method, the Stoner model.