Journal
NATURE COMMUNICATIONS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms13486
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Funding
- AFOSR MURI [FA9550-12-1-0488]
- MRSEC Program of the NSF [DMR-1419807]
- National Thousand-Young-Talents Program of China
- National 973 Program of China [2013CB632704, 2013CB922404]
- National Natural Science Foundation of China [11434017]
- Ministry of Science and Technology of China [2016YFA0302400]
- NSFC [11674189]
- DOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0010526]
- U.S. ARO through the ISN [W911NF-13-D-0001]
- MIT S3TEC EFRC of DOE [DE-SC0001299]
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Classical wave fields are real-valued, ensuring the wave states at opposite frequencies and momenta to be inherently identical. Such a particle-hole symmetry can open up new possibilities for topological phenomena in classical systems. Here we show that the historically studied two-dimensional (2D) magnetoplasmon, which bears gapped bulk states and gapless one-way edge states near-zero frequency, is topologically analogous to the 2D topological p + ip superconductor with chiral Majorana edge states and zero modes. We further predict a new type of one-way edge magnetoplasmon at the interface of opposite magnetic domains, and demonstrate the existence of zero-frequency modes bounded at the peripheries of a hollow disk. These findings can be readily verified in experiment, and can greatly enrich the topological phases in bosonic and classical systems.
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