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arXiv · 1604.07334

Quasiparticle interference on cubic perovskite oxide surfaces

Yoshinori Okada·Tay-Rong Chang·Guoqing Chang·Ryota Shimizu·Shiue-Yuan Shiau·Horng-Tay Jeng·Susumu Shiraki·Arun Bansil·Hsin Lin·Taro Hitosugi
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Abstract

We report the first observation of coherent surface states on cubic perovskite oxide SrVO3(001) thin films through spectroscopic imaging scanning tunneling microscopy. A direct link between the observed atomic-scale interference patterns and the formation of a dxy-derived surface state is supported by first-principles calculations. Furthermore, we show that the apical oxygens on the topmost VO2 plane play a critical role in controlling the spectral weight of the observed coherent surface state.

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Yoshinori Okada, Tay-Rong Chang, Guoqing Chang, Ryota Shimizu, Shiue-Yuan Shiau, Horng-Tay Jeng, Susumu Shiraki, Arun Bansil, Hsin Lin, Taro Hitosugi. 2016-12-10. Quasiparticle interference on cubic perovskite oxide surfaces. https://doi.org/10.1103/physrevlett.119.086801

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