Please use this identifier to cite or link to this item:
|Title:||Systematic study of ferroelectric, interfacial, oxidative, and doping effects on conductance of Pt/BaTiO 3/Pt ferroelectic tunnel junctions||Authors:||Shen, L.
|Issue Date:||9-Feb-2012||Citation:||Shen, L., Zhou, T., Bai, Z., Zeng, M., Goh, J.Q., Yuan, Z.-M., Han, G., Liu, B., Feng, Y.P. (2012-02-09). Systematic study of ferroelectric, interfacial, oxidative, and doping effects on conductance of Pt/BaTiO 3/Pt ferroelectic tunnel junctions. Physical Review B - Condensed Matter and Materials Physics 85 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.85.064105||Abstract:||Using the nonequilibrium Green's function method combined with density functional theory, we systematically study the ferroelectric, interfacial, oxidative, and doping effects on electron transport of BaTiO 3-based ferroelectric tunnel junctions (Pt/BaTiO 3/Pt). The ferroelectric effect reduces the tunneling conductance compared to nonferroelectric BaTiO 3 due to the large decay rate of the Δ5 (p y and d yz) band. The TiO 2-terminated interface shows a better tunneling conductance than the BaO-terminated interface since electrons mainly transport through the Ti 3d-O p bonding state. Interfacial oxidation strongly reduces the conductance due to trapping of electrons and interfacial charge localization by additional O ions, while Nb doping enhances the conductance due to the delocalized distribution of charges on orbitals of the transport channel. Our studies provide a useful guide to practical applications of tunnel junctions with ferroelectric barriers. © 2012 American Physical Society.||Source Title:||Physical Review B - Condensed Matter and Materials Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/83145||ISSN:||10980121||DOI:||10.1103/PhysRevB.85.064105|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 4, 2020
WEB OF SCIENCETM
checked on May 26, 2020
checked on May 31, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.