Ground-state phase diagram of 2D electrons in a high Landau level: a density-matrix renormalization group study.
Ground-state phase diagram of 2D electrons in a high Landau level: a density-matrix renormalization group study.
复制标题
DOI：
10.1103/physrevlett.86.5755
复制
发表时间：
2001-01
影响因子：
8.6
通讯作者：
Naokazu Shibata;D. Yoshioka
中科院分区：
文献类型：
--
作者：
Naokazu Shibata;D. Yoshioka
用密度矩阵重整化群方法研究了高朗道能级（指数N = 2）下二维电子的基态相图。系统地计算了nu = 1/8 ~ 1/2的各种填充因子下的对相关函数。结果表明，基态相图由三种不同的电荷密度波态组成：条纹相、气泡相和维格纳晶体。条纹相和气泡相之间的边界被确定为nu（s-b）c约为0.38，气泡相和维格纳晶体之间的边界为nu（b-W）c约为0.24。每个跃迁都是一阶跃迁。
The ground-state phase diagram of 2D electrons in a high Landau level (index N = 2) is studied by the density-matrix renormalization group method. Pair correlation functions are systematically calculated for various filling factors from nu = 1/8 to 1/2. It is shown that the ground-state phase diagram consists of three different charge density wave states called stripe phase, bubble phase, and Wigner crystal. The boundary between the stripe and the bubble phases is determined to be nu(s-b)c approximately 0.38, and that for the bubble phase and Wigner crystal is nu(b-W)c approximately 0.24. Each transition is of first order.