- Author
- Year
- 2009
- Title
- Cleavage surfaces of the BaFe2−xCoxAs2 and FeySe1−xTex superconductors: A combined STM plus LEED study
- Journal
- Physical Review B
- Volume | Issue number
- 80 | 14
- Pages (from-to)
- 140507(R)
- Number of pages
- 4
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Van der Waals-Zeeman Institute (WZI)
- Abstract
-
We elucidate the termination surface of cleaved single crystals of the BaFe2−xCoxAs2 and FeySe1−xTex families of the high-temperature iron-based superconductors. By combining scanning tunneling microscopic data with low-energy electron diffraction we prove that the termination layer of the BaFe2As2 systems is a remnant of the Ba layer, which exhibits a complex diversity of ordered and disordered structures. The observed surface topographies and their accompanying superstructure reflections in electron diffraction depend on the cleavage temperature. In stark contrast, FeySe1−xTex possesses only a single termination structure—that of the tetragonally ordered Se1−xTex layer.
- URL
- go to publisher's site
- Language
- Undefined/Unknown
- Persistent Identifier
- https://hdl.handle.net/11245/1.318054
Disclaimer/Complaints regulations
If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library, or send a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.