Dynamically stabilized growth of polar oxides: the case of MgO(111) |
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Authors: | Lazarov Vlado K Cai Zhuhua Yoshida Kenta Zhang K Honglian L Weinert M Ziemer Katherine S Hasnip Philip J |
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Affiliation: | Department of Physics, University of York, York YO10 5DD, United Kingdom. vlado.lazarov@york.ac.uk |
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Abstract: | By using MgO(111) as a model system for polar oxide film growth, we show by first-principles calculations that H acts as a surfactant, i.e., the H changes its position and bonding during the growth process, remaining in the surface region. Continuous presence of H during the growth of MgO(111) film efficiently removes the microscopic dipole moment, thus enabling the growth of perfect fcc-ordered MgO(111) films. These theoretical predictions are confirmed experimentally by molecular beam epitaxy single crystal growth of MgO(111) on SiC(0001). |
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