Cite this article:
Zhang Shuang-Hong, Wang Jia-Ou, Qian Hai-Jie, Wu Rui, Zhang Nian, Lei Tao, Liu Chen, Kurash Ibrahim. Temperature effect on the electronic structure of Nb:SrTiO3 (100) surfaceJ. Chin. Phys. B, 2015, 24(2): 027901.
Zhang Shuang-Hong, Wang Jia-Ou, Qian Hai-Jie, Wu Rui, Zhang Nian, Lei Tao, Liu Chen, Kurash Ibrahim. Temperature effect on the electronic structure of Nb:SrTiO3 (100) surfaceJ. Chin. Phys. B, 2015, 24(2): 027901.
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Temperature effect on the electronic structure of Nb:SrTiO3 (100) surface
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Abstract
The effect of temperature on the electronic structure of Nb-doped SrTiO3 (100) surface is investigated by high-resolution synchrotron radiation photoemission spectroscopy. According to the x-ray photoemission spectroscopy (XPS) results, at an annealing temperature of less than 700 ℃, the adsorbed carbon and hydroxyl on the STO surface could be removed, to expose the fresh intrinsic surface with a constant ratio of Ti/O. It is obvious that the STO would be doped by Ca+ impurities of bulks and O vacancies in the surface after annealing at 920 ℃ for one hour. -
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