Transition from three- to two-dimensional growth in strained SrRuO3 films on SrTiO3(001)
作者： F. Sánchez , M. V. Garcı́a-Cuenca , C. Ferrater , M. Varela , G. Herranz
DOI: 10.1063/1.1599040
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摘要: The morphology of strained SrRuO3 films grown on SrTiO3(001) has been investigated as a function thickness. A transition growth mode observed. At the early stages, there is fingerlike structure originated by three-dimensional (3D) islands that nucleated along substrate steps. Afterward, adatoms stick preferentially in valleys and become progressively smoother. thickness above 10–20 nm, are extremely flat have self-organized terraces steps, with proceeding mainly step flow (two-dimensional) mechanism. Relevance film properties possible use initial, nanometric, 3D structures discussed.
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