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Morais de Lima, Mauricio, Jr.; Kosevich, Yu. A.; Santos, P.V.; Cantarero Sáez, Andrés | |||
Aquest document és un/a article, creat/da en: 2010 | |||
Este documento está disponible también en : 10.1103/PhysRevLett.104.165502 |
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We present the experimental observation of Bloch oscillations, the Wannier-Stark ladder, and Landau-Zener tunneling of surface acoustic waves in perturbed grating structures on a solid substrate. A model providing a quantitative description of our experimental observations, including multiple Landau-Zener transitions of the anticrossed surface acoustic Wannier-Stark states, is developed. The use of a planar geometry for the realization of the Bloch oscillations and Landau-Zener tunneling allows a direct access to the elastic field distribution. The vertical surface displacement has been measured by interferometry. | |||
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