The effect of inter-Landau-band mixing on extended states in quantum Hall system
Gang Xiong, Shi-Dong Wang, Qian Niu, Yupeng Wang, X. C. Xie, De-Cheng Tian, X. R. Wang
Abstract
The effect of inter-Landau-band mixing on electron localization in an integer quantum Hall system is studied. We find that mixing of localized states with opposite chirality tends to delocalize the states. This delocalization effect survives the quantum treatment. Extended states form bands because of this mixing, as we show through a numerical calculation on a two-channel network model. Based on this result, we propose a new phase diagram with a narrow metallic phase that separates any neighboring QH phases from each other and also separates each of them from the insulating phase. We reanalyzed the data from recent non-scaling experiments, and show that they are consistent with our theory.
Create a lesson
Related papers
Parafermions in polarized ν=2/3 Fractional Quantum (Anomalous) Hall Heterostructures
Steffen Bollmann, Andreas Haller, Thomas L. Schmidt et al.
Extended strange metal and superconductivity in partially filled moiré Hubbard bands
Yiyu Xia, Yichi Zhang, Zhongdong Han et al.
Exciton superfluidity in two-dimensional bilayers at zero and high magnetic fields
Sankar Das Sarma, Yang-Zhi Chou
Microwave spectroscopic evidence of a moiré-commensurate electron crystal in monolayer graphene
A. Solodovnyk, P. Colgan, K. Watanabe et al.
Indirect Control of Buried CoB Spin Textures via C60-Induced Modification of Ir Spin-Orbit Coupling
Colin Kirkbride, Christopher E A Barker, Timothy Moorsom et al.
Theory of Dispersion and Exchange Interactions Subjected to Surface Roughness in Application to Signal Transmission through a Nanoswitch
Galina L. Klimchitskaya, Alexander S. Korotkov, Vera V. Loboda et al.