Ferroelastic Twin Angles at the Surface of CaTiO_{3} Quantified by Photoemission Electron Microscopy.
Phys Rev Lett
; 132(5): 056201, 2024 Feb 02.
Article
in En
| MEDLINE
| ID: mdl-38364151
ABSTRACT
We use photoemission electron microscopy to measure the ferroelastic twin wall angles at the surface of CaTiO_{3} (001) and deduce the strain ordering. We analyze the angular dependence of the photoelectron emission from different domain surfaces, each with its own characteristic tilt angle in the factory rooflike topography. By considering the surface topography as a field perturbation, the offset in the photoemission threshold can be directly related to the tilt angles. With knowledge of the symmetry allowed twin walls we quantify the twin angles between 179.1° to 180.8°.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2024
Document type:
Article