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Surface and Bulk Structural Properties of Single Crystalline Sr3Ru2O7
- Publication Year :
- 2010
-
Abstract
- We report temperature and thermal-cycling dependence of surface and bulk structures of double-layered perovskite Sr3Ru2O7 single crystals. The surface and bulk structures were investigated using low-energy electron diffraction (LEED) and single-crystal X-ray diffraction (XRD) techniques, respectively. Single-crystal XRD data is in good agreement with previous reports for the bulk structure with RuO6 octahedral rotation, which increases with decreasing temperature (~ 6.7(6)degrees at 300 K and ~ 8.1(2) degrees at 90 K). LEED results reveal that the octahedra at the surface are much more distorted with a higher rotation angle (~ 12 degrees between 300 and 80 K) and a slight tilt ((4.5\pm2.5) degrees at 300 K and (2.5\pm1.7) degrees at 80 K). While XRD data confirms temperature dependence of the unit cell height/width ratio (i.e. lattice parameter c divided by the average of parameters a and b) found in a prior neutron powder diffraction investigation, both bulk and surface structures display little change with thermal cycles between 300 and 80 K.<br />Comment: 25 pages, 5 figures, 5 tables, to appear in Physical Review B
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1003.5221
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.81.184104