SrTiO3 (001) ( × )R33.7° Surface Reconstruction
نویسندگان
چکیده
منابع مشابه
Atomistic simulation of SrTiO3(001) surface relaxation
The (001) surface relaxation of the cubic perovskite SrTiO3 crystal has been studied using the shell model. The positions of atoms in several surface layers embedded in the electrostatic field of the remainder of the crystal are calculated. We show that Ti4+, Sr2+, and O2− ions in six near-surface layers are displaced differently from their crystalline sites which leads to the creation of so-ca...
متن کاملSrTiO3(001) surface structures under oxidizing conditions
The thermodynamically stable (2 1), c(4 2) and c(6 2) surface structures were obtained under oxidative conditions on the SrTiO3(0 0 1) surface and studied with transmission electron microscopy. All three reconstructed surfaces exhibit similar morphological features––formation of flat h100i facets on the surface, stabilization of h110i originally polar facets as well as the existence of surface ...
متن کاملSurface Structures of SrTiO3 (001): A TiO2-rich Reconstruction with a c(4 × 2) Unit Cell
We report the solution of the c(4 × 2) reconstruction of SrTiO3 (001), obtained through a combination of high-resolution transmission electron microscopy, direct methods analysis, and density functional theory. The structure is characterized by a single overlayer of TiO2 stoichiometry in which TiO5 polyhedra are arranged into edge-shared structures, in contrast to the corner-shared TiO6 polyhed...
متن کاملSurface structures of SrTiO3 (001): a TiO2-rich reconstruction with a c(4 x 2) unit cell.
We report the solution of the c(4 x 2) reconstruction of SrTiO(3) (001), obtained through a combination of high-resolution transmission electron microscopy, direct methods analysis, and density functional theory. The structure is characterized by a single overlayer of TiO(2) stoichiometry in which TiO(5) polyhedra are arranged into edge-shared structures, in contrast to the corner-shared TiO(6)...
متن کاملControl of orbital reconstruction in (LaAlO3)M/(SrTiO3)N(001) quantum wells by strain and confinement
The diverse functionality emerging at oxide interfaces calls for a fundamental understanding of the mechanisms and control parameters of electronic reconstructions. Here, we explore the evolution of electronic phases in (LaAlO3)M/(SrTiO3)N (001) superlattices as a function of strain and confinement of the SrTiO3 quantum well. Density functional theory calculations including a Hubbard U term rev...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2009
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927609098924