期刊
PHYSICAL REVIEW B
卷 92, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.125153
关键词
-
资金
- Fundacao para a Ciencia e a Tecnologia [PTDC/EEI-TEL/2764/2012, PTDC/EEI-TEL/4543/2014]
Here, we formally develop theoretical methods to topologically classify awide class of bianisotropic continuous media. It is shown that for continuous media, the underlying wave vector space may be regarded as the Riemann sphere. We derive sufficient conditions that ensure that the pseudo-Hamiltonian that describes the electrodynamics of the continuous material is well behaved so that the Chern numbers are integers. Our theory brings the powerful ideas of topological photonics to a wide range of electromagnetic waveguides and platforms with no intrinsic periodicity and sheds light over the emergence of edge states at the interfaces between topologically inequivalent continuous media.
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