Crossover from incoherent to coherent phonon scattering in epitaxial oxide superlattices
作者： Jayakanth Ravichandran , Ajay K. Yadav , Ramez Cheaito , Pim B. Rossen , Arsen Soukiassian
DOI: 10.1038/NMAT3826
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摘要: Elementary particles such as electrons, or photons, are frequent subjects of wave-nature-driven investigations, unlike collective excitations such as phonons. The demonstration of wave–particle crossover, in terms of macroscopic properties, is crucial to the understanding and application of the wave behaviour of matter. We present an unambiguous demonstration of the theoretically predicted crossover from diffuse (particle-like) to specular (wave-like) phonon scattering in epitaxial oxide superlattices, manifested by a minimum in …
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