期刊
SCIENCE
卷 354, 期 6309, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aag1992
关键词
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资金
- Office of Naval Research [N00014-15-1-2671]
- Air Force Office of Scientific Research [FA9550-15-1-0478]
- U.S. Department of Energy [DE-FG02-00ER45799, DOE-DE-SC0012592, DE-SC0012375]
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF4533]
- Ministerio de Economia y Competitividad (Spain) [MAT2014-59096-P, SEV-2015-0522]
- European Commission [CNECT-ICT-604391, FP7-ICT-2013-613024-GRASP]
- U.S. Department of Energy (DOE) [DE-FG02-00ER45799, DE-SC0012375] Funding Source: U.S. Department of Energy (DOE)
- ICREA Funding Source: Custom
van der Waals (vdW) materials consist of individual atomic planes bonded by weak vdW attraction. They display nearly all optical phenomena found in solids, including plasmonic oscillations of free electrons characteristic of metals, light emission/lasing and excitons encountered in semiconductors, and intense phonon resonances typical of insulators. These phenomena are embodied in confined light-matter hybrid modes termed polaritons-excitations of polarizable media, which are classified according to the origin of the polarization. The most studied varieties are plasmon, phonon, and exciton polaritons. In vdW materials, polaritons exhibit extraordinary properties that are directly affected by dimensionality and topology, as revealed by state-of-the-art imaging of polaritonic waves. vdW heterostructures provide unprecedented control over the polaritonic response, enabling new quantum phenomena and nanophotonics applications.
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