Electric controlling of surface metal-insulator transition in the doped BaTiO3 film
Source abstract
Abstract
Based on first-principles calculations, the BaTiO3(BTO) film with local La-doping is studied. For a selected concentration and position of doping, the surface metal-insulator transition occurs under the applied electric field, and the domain appears near the surface for both bipolar states. Furthermore, for the insulated surface state, i.e., the downward polarization state in the doped film, the gradient bandgap structure is achieved, which favors the absorption of solar energy. Our investigation can provide an alternative avenue in modification of surface property and surface screening effect in polar materials.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Electronic and Structural Properties of Oxides · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, and School of Mathematics and Physics, Suzhou University of Science and Technology 1 , Suzhou 215009, China
School of Electronic and Information Engineering, Suzhou University of Science and Technology 2 , Suzhou 215009, China
Funding
National Natural Science Foundation of China
References (19)
Show source-provided references
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