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Meron Spin Textures in Momentum Space
- 发表刊物：Physical Review Letters
- 摘要：We show that a momentum-space meron spin texture for electromagnetic fields in free space can be generated by controlling the interaction of light with a photonic crystal slab having a nonzero Berry curvature. These spin textures in momentum space have not been previously noted either in electronic or photonic systems. Breaking the inversion symmetry of a honeycomb photonic crystal gaps out the Dirac cones at the corners of Brillouin zone. The pseudospin textures of photonic bands near the gaps exhibit a meron or antimeron. Unlike the electronic systems, the pseudospin texture of the photonic…
- 卷号：124
- 期号：10
- 页面范围：106103
- 是否译文：否
- 发表时间：2020-03-10
- 发布期刊链接：https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.106103
