Chern-Simons Theory for Quantum Hall Stripes
Chern-Simons Theory for Quantum Hall Stripes
复制标题
量子霍尔条纹的陈-西蒙斯理论
DOI：
10.1142/s0217979201004988
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
S. Scheidl
中科院分区：
文献类型：
--
作者：
B. Rosenow;S. Scheidl
We develop a Chern-Simons theory to describe a two-dimensional electron gas in intermediate magnetic fields.在这种方法中，不均匀状态的出现类似于超导体的中间状态。在最高朗道能级的一半填充时，我们找到了单向电荷密度波（CDW）解决方案。通过半经典计算，我们对面内磁场存在下 CDW 方向的变化给出了直观的解释。电子带质量的各向异性被认为是 CDW 的可再现取向的可能来源。
We develop a Chern-Simons theory to describe a two-dimensional electron gas in intermediate magnetic fields. Within this approach, inhomogeneous states emerge in analogy to the intermediate state of a superconductor. At half filling of the highest Landau level we find unidirectional charge-density-wave (CDW) solutions. With a semiclassical calculation we give an intuitive explanation of the change of CDW orientation in the presence of an in-plane magnetic field. An anisotropy in the electron band mass is suggested as a possible source of the reproducible orientation of the CDW.