SEM imaging of acoustically stimulated charge transport in solids

Evgeny V. Emelin, Hak Dong Cho, Z. A. Insepov, J. C. Lee, Tae Won Kang, Gennady N. Panin, Рощупкин Дмитрий Валентинович, Kurbangali Tynyshtykbayev

2017

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DOI 10.1063/1.4986779

Data confidence 70 medium

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Abstract

Acoustically stimulated charge transport in solids was studied using the scanning electron microscopy method (SEM). The surface acoustic wave on the surface of the YZ-cut of a LiNbO3 crystal was visualized by registration of low-energy secondary electrons in SEM, and the charge distribution on the crystal surface was visualized using the electron beam induced current method. To register the induced current, an interdigital transducer structure was formed from graphene on the crystal surface. It was shown that the charge distribution on the crystal surface corresponds to the distribution of the acoustic wave field on the crystal surface.