The Library
Enhanced electron correlations at the SrxCa1−xVO3 surface
Tools
Tools
Tools
Laverock, J., Kuyyalil, J., Chen, B., Singh, R. P., Karlin, B., Woicik, J. C., Balakrishnan, Geetha and Smith, K. E. (2015) Enhanced electron correlations at the SrxCa1−xVO3 surface. Physical Review B, 91 (16). 165123 . doi:10.1103/PhysRevB.91.165123
|
PDF
WRAP-enhanced-electron-surface-Laverock-2017.pdf - Published Version - Requires a PDF viewer. Download (966Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.91.165123
Abstract
We report hard x-ray photoemission spectroscopy measurements of the electronic structure of the prototypical correlated oxide SrxCa1−xVO3. By comparing spectra recorded at different excitation energies, we show that 2.2 keV photoelectrons contain a substantial surface component, whereas 4.2 keV photoelectrons originate essentially from the bulk of the sample. Bulk-sensitive measurements of the O 2p valence band are found to be in good agreement with ab initio calculations of the electronic structure, with some modest adjustments to the orbital-dependent photoionization cross sections. The evolution of the O 2p electronic structure as a function of the Sr content is dominated by A-site hybridization. Near the Fermi level, the correlated V 3d Hubbard bands are found to evolve in both binding energy and spectral weight as a function of distance from the vacuum interface, revealing higher correlation at the surface than in the bulk.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QE Geology |
||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Perovskite, Condensed matter, Surfaces (Physics), Electronic structure | ||||||
| Journal or Publication Title: | Physical Review B | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 1098-0121 | ||||||
| Official Date: | 20 April 2015 | ||||||
| Dates: |
|
||||||
| Volume: | 91 | ||||||
| Number: | 16 | ||||||
| Article Number: | 165123 | ||||||
| DOI: | 10.1103/PhysRevB.91.165123 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Copyright Holders: | American Physical Society | ||||||
| Funder: | United States. Department of Energy, Boston University, University of Warwick, Engineering and Physical Sciences Research Council (EPSRC) | ||||||
| Grant number: | DE-FG02-98ER45680, DE-AC02-98CH10886 (Department of Energy), EP/I007210/1 (ESRC) |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
