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Accidental degeneracy of double Dirac cones in a phononic crystal
Artificial honeycomb lattices with Dirac cone dispersion provide a macroscopic platform to study the massless Dirac quasiparticles and their novel geometric phases. In this paper, a quadruple-degenerate state is achieved at the center of the Brillouin zone in a two-dimensional honeycomb lattice phon...
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| Main Authors: | , , , , , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Nature Publishing Group
2014
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4070013/ https://ncbi.nlm.nih.gov/pubmed/24714512 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/srep04613 |
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