Experimental observation of Weyl points
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. Here, we pave the way to a variety of photonic topological phenomena in three dimensions.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
- Zhejiang Univ., Hangzhou, Zhejiang (China). Lab. of Applied Research on Electromagnetics (ARE)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1370988
- Grant/Contract Number:
- SC0001299; FG02-09ER46577
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science
- Additional Journal Information:
- Journal Volume: 349; Journal Issue: 6248; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; Journal ID: ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; solar (photovoltaic); solar (thermal); solid state lighting; phonons; thermal conductivity; thermoelectric; defects; mechanical behavior; charge transport; spin dynamics; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)
Citation Formats
Lu, Ling, Wang, Zhiyu, Ye, Dexin, Ran, Lixin, Fu, Liang, Joannopoulos, John D., and Soljačić, Marin. Experimental observation of Weyl points. United States: N. p., 2019.
Web. doi:10.1126/science.aaa9273.
Lu, Ling, Wang, Zhiyu, Ye, Dexin, Ran, Lixin, Fu, Liang, Joannopoulos, John D., & Soljačić, Marin. Experimental observation of Weyl points. United States. doi:10.1126/science.aaa9273.
Lu, Ling, Wang, Zhiyu, Ye, Dexin, Ran, Lixin, Fu, Liang, Joannopoulos, John D., and Soljačić, Marin. Wed .
"Experimental observation of Weyl points". United States. doi:10.1126/science.aaa9273. https://www.osti.gov/servlets/purl/1370988.
@article{osti_1370988,
title = {Experimental observation of Weyl points},
author = {Lu, Ling and Wang, Zhiyu and Ye, Dexin and Ran, Lixin and Fu, Liang and Joannopoulos, John D. and Soljačić, Marin},
abstractNote = {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. Here, we pave the way to a variety of photonic topological phenomena in three dimensions.},
doi = {10.1126/science.aaa9273},
journal = {Science},
number = 6248,
volume = 349,
place = {United States},
year = {2019},
month = {8}
}
Web of Science
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journal, November 2017
- Chang, Guoqing; Xu, Su-Yang; Wieder, Benjamin J.
- Physical Review Letters, Vol. 119, Issue 20
Three Dimensional Photonic Dirac Points in Metamaterials
journal, November 2017
- Guo, Qinghua; Yang, Biao; Xia, Lingbo
- Physical Review Letters, Vol. 119, Issue 21
Topological Maxwell Metal Bands in a Superconducting Qutrit
journal, March 2018
- Tan, Xinsheng; Zhang, Dan-Wei; Liu, Qiang
- Physical Review Letters, Vol. 120, Issue 13
Theory of chiral edge state lasing in a two-dimensional topological system
journal, December 2019
- Seclì, Matteo; Capone, Massimo; Carusotto, Iacopo
- Physical Review Research, Vol. 1, Issue 3
Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs
journal, August 2015
- Huang, Xiaochun; Zhao, Lingxiao; Long, Yujia
- Physical Review X, Vol. 5, Issue 3
Experimental discovery of a topological Weyl semimetal state in TaP
journal, November 2015
- Xu, Su-Yang; Belopolski, Ilya; Sanchez, Daniel S.
- Science Advances, Vol. 1, Issue 10
Three-dimensional Majorana fermions in chiral superconductors
journal, December 2016
- Kozii, Vladyslav; Venderbos, Jörn W. F.; Fu, Liang
- Science Advances, Vol. 2, Issue 12
Experimental demonstration of acoustic semimetal with topologically charged nodal surface
journal, February 2020
- Xiao, Meng; Ye, Liping; Qiu, Chunyin
- Science Advances, Vol. 6, Issue 8
Ideal Weyl points and helicoid surface states in artificial photonic crystal structures
journal, January 2018
- Yang, Biao; Guo, Qinghua; Tremain, Ben
- Science, Vol. 359, Issue 6379
Observation of chiral zero mode in inhomogeneous three-dimensional Weyl metamaterials
journal, January 2019
- Jia, Hongwei; Zhang, Ruixing; Gao, Wenlong
- Science, Vol. 363, Issue 6423
Photonic Dirac monopoles and skyrmions: spin-1 quantization [Invited]
journal, December 2018
- Van Mechelen, Todd; Jacob, Zubin
- Optical Materials Express, Vol. 9, Issue 1