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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ye, Dexin Joannopoulos, John D. Soljacic, Marin Fu, Liang Lu, Ling Ran, Lixin Wang, Zhiyu |
| Description | Author Affiliation: Lu L ( Department of Physics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA. linglu@mit.edu.); Wang Z ( Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, Zhejiang 310027, China.); Ye D ( Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, Zhejiang 310027, China.); Ran L ( Laboratory of Applied Research on Electromagnetics (ARE), Zhejiang University, Hangzhou, Zhejiang 310027, China.); Fu L ( Department of Physics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.); Joannopoulos JD ( Department of Physics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.); Soljacic M ( Department of Physics, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.) |
| Abstract | The massless solutions to the Dirac equation are described by the so-called Weyl Hamiltonian. The Weyl equation requires a particle to have linear dispersion in all three dimensions while being doubly degenerate at a single momentum point. These Weyl points are topological monopoles of quantized Berry flux exhibiting numerous unusual properties. We performed angle-resolved microwave transmission measurements through a double-gyroid photonic crystal with inversion-breaking where Weyl points have been theoretically predicted to occur. The excited bulk states show two linear dispersion bands touching at four isolated points in the three-dimensional Brillouin zone, indicating the observation of Weyl points. This work paves the way to a variety of photonic topological phenomena in three dimensions. |
| ISSN | 00368075 |
| Issue Number | 6248 |
| Journal | Science |
| Volume Number | 349 |
| e-ISSN | 10959203 |
| Language | English |
| Publisher | American Association for the Advancement of Science (United States) |
| Publisher Date | 2015-08-07 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | History and Philosophy of Science |
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