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arXiv · 1804.04759

Strain-induced Defect Superstructure on the SrTiO3(110) Surface

Zhiming Wang·Fengmiao Li·Sheng Meng·Jiandi Zhang·E. W. Plummer·Ulrike Diebold·Jiandong Guo
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Abstract

We report on a combined scanning tunneling microscopy and density functional theory calculation study of the SrTiO3(110)-(4 x 1) surface. It is found that antiphase domains are formed along the [1-10]-oriented stripes on the surface. The domain boundaries are decorated by defects pairs consisting of Ti2O3 vacancies and Sr adatoms, which relieve the residual stress. The formation energy of, and interactions between, vacancies result in a defect superstructure. It is suggested that the density and distributions of defects can be tuned by strain engineering, providing a fexible platform for the designed growth of complex oxide materials.

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Zhiming Wang, Fengmiao Li, Sheng Meng, Jiandi Zhang, E. W. Plummer, Ulrike Diebold, Jiandong Guo. 2018-04-13. Strain-induced Defect Superstructure on the SrTiO3(110) Surface. https://doi.org/10.1103/physrevlett.111.056101

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