Visualization of Misfit Dislocation Network at the BaSnO3-LaAlO3 Interface

Band alignment at epitaxial BaSnO3/SrTiO3(001) and BaSnO3/LaAlO3(001) heterojunctions

Electrostriction at the LaAlO3/SrTiO3 interface.

We present a direct comparison between experimental data and ab initio calculations for the electrostrictive effect in the polar LaAlO(3) layer grown on SrTiO(3) substrates. From the structural data, a complete screening of the LaAlO(3) dipole field is observed for film thicknesses between 6 and 20 uc. For thinner films, an expansion of the c axis of 2% matching the theoretical predictions for ...

Conducting channel at the LaAlO3/SrTiO3 interface

Z. Huang,1 X. Renshaw Wang,1,2 Z. Q. Liu,1,2 W. M. Lü,1,3 S. W. Zeng,1,2 A. Annadi,1,2 W. L. Tan,2 X. P. Qiu,3 Y. L. Zhao,1,2 M. Salluzzo,4 J. M. D. Coey,1,5 T. Venkatesan,1,2,3 and Ariando1,2,* 1NUSNNI-NanoCore, National University of Singapore, 117411 Singapore, Singapore 2Department of Physics, National University of Singapore, 117542 Singapore, Singapore 3Department of Electrical and Comput...

Electron-energy-loss scattering near a single misfit dislocation at the GaAs/GaInAs interface.

Spatially resolved electron-energy-loss scattering has been used to study changes in the inelastic scattering near the bulk band-gap energy for locations near the GaAs-Ga0. 85Ino. [5As interface. %e observe the expected bulk band gap on either side of the interface. At a single interface-misfit dislocation we observe scatterIng which is consistent with an excitation of transitions between a loc...

Characterization and visualization of the lattice misfit associated with dislocation cores

Atomic misfit associated with a crystal dislocation is manifested by displacements of atoms from their positions in the perfect lattice. The discrete character of the crystal lattice and the nature of interatomic bonds distribute this misfit over the plane normal to the dislocation line. The Nye tensor, which describes the distribution of the resultant Burgers vector across a plane normal to th...