Anisotropic pseudopotential characterization of quantum hall systems under tilted magnetic field

作     者：Yang, Bo Lee, Ching Hua Zhang, Chi Hu, Zi-Xiang 

作者机构：Complex Systems Group Institute of High Performance Computing A*STAR 138632 Singapore Material Science and Engineering Institute of High Performance Computing A*STAR 138632 Singapore Department of Physics National University of Singapore 117542 Singapore International Center for Quantum Materials Peking University Beijing100871 China Collaborative Innovation Center of Quantum Matter Beijing100871 China Department of Physics Chongqing University Chongqing401331 China 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2017年

核心收录：

主　　题：Anisotropy 

摘      要：We analytically derived the effective two-body interaction for a finite thickness quantum Hall system with a harmonic perpendicular confinement and an in-plane magnetic field. The anisotropic effective interaction in the lowest Landau level (LLL) and first Landau level (1LL) are expanded in the basis of the generalized pseudopotentials (PPs), and we analyze how the coefficients of some prominent isotropic and anisotropic PPs depend on the thickness of the sample and the strength of the in-plane magnetic field. We also investigate the stability of the topological quantum Hall states, especially the Laughlin state and its emergent guiding center metric, which we can now compute analytically. An interesting reorientation of the anisotropy direction of the Laughlin state in the 1LL is revealed, and we also discuss various possible experimental ramifications for this quantum Hall system with broken rotational symmetry. Copyright © 2017, The Authors. All rights reserved.