engleski

Electronic properties of BaTiO3/metal oxide interfaces

Barium titanate is a widely known and studied perovskite material. In its tetragonal phase, it exhibits ferroelectricity due to inversion symmetry breaking during cubic- tetragonal phase transition. Coupling ferroelectricity with ferromagnetism can lead to new opportunities in the electronic device industry, which lead to studies where barium titanate is combined in different heterostructures. In this work, we are investigating electronic properties at the BaTiO3/metal oxide interfaces. Prior to electronic properties investigation, 3 different heterostructures comprising of different metal oxides coupled with barium titanate are relaxed, and the structural changes at the interface are analysed. A number of physical quantities that give us information about the charge mobility at the interface are also investigated, including charge carrier effective mass, electrostatic potential across the heterostructure, and charge density. Looking into the charge mobility at the interface can give us crucial information on potential use of studied materials in optoelectronic devices, as well as their potential use in other electronic devices.

DFT, electronic properties, heterostructure, interface

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