Quantum Hall phase and chiral edge states simulated by a coupled dipole method
SCIE
SCOPUS
- Title
- Quantum Hall phase and chiral edge states simulated by a coupled dipole method
- Authors
- KIM, MINKYUNG; RHO, JUNSUK
- Date Issued
- 2020-05
- Publisher
- AMER PHYSICAL SOC
- Abstract
- We present theoretical modeling of the quantum Hall phase and chiral edge states in a gyroelectric photonic crystal. The theoretical framework represented here is based on a coupled dipole method, which is a direct counterpart of the tight-binding approximation. We confirm that gyrotropic coupling produces a band gap characterized by a nonzero Chern number. Gapless edge states appear at an interface between a gyroeletric photonic crystal and a vacuum. At a domain wall between media of positive and negative gyrotropy, topological edge states that are analogous to the Jackiw-Rebbi states are observed. Propagation of the chiral edge states is also simulated in real space under excitation of an external dipole source. This analysis provides a toy model to describe the quantum Hall phase in a purely optical manner, without using a mapping or an analogy of the electron wave function in the quantum Hall effect.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105611
- DOI
- 10.1103/PhysRevB.101.195105
- ISSN
- 2469-9950
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 101, no. 19, 2020-05
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- There are no files associated with this item.
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