期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.164301
关键词
-
资金
- DFG [BU 1556/27, IRTG 1404]
- GSRT of Greece (ARISTEIA) [285]
- European Commission (EC) [216176]
We employ spontaneous Brillouin light scattering spectroscopy and detailed theoretical calculations to reveal and identify elastic excitations inside the band gap of hypersonic hybrid superlattices. Surface and cavity modes, their strength and anticrossing are unambiguously documented and fully controlled by layer thickness, elasticity, and sequence design. This new soft matter based superlattice platform allows facile engineering of the density of states and opens new pathways to tunable phoxonic crystals.
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