Show simple item record

dc.contributor.authorEdmonds, M.
dc.contributor.authorHellerstedt, J.
dc.contributor.authorTadich, A.
dc.contributor.authorSchenk, A.
dc.contributor.authorO'Donnell, Kane
dc.contributor.authorTosado, J.
dc.contributor.authorButch, N.
dc.contributor.authorSyers, P.
dc.contributor.authorPaglione, J.
dc.contributor.authorFuhrer, M.
dc.date.accessioned2017-01-30T13:01:49Z
dc.date.available2017-01-30T13:01:49Z
dc.date.created2014-09-08T20:00:18Z
dc.date.issued2014
dc.identifier.citationEdmonds, M. and Hellerstedt, J. and Tadich, A. and Schenk, A. and O'Donnell, K. and Tosado, J. and Butch, N. et al. 2014. Stability and Surface Reconstruction of Topological Insulator Bi2Se3 on Exposure to Atmosphere. Journal of Physical Chemistry C. 118 (35): pp. 20413-20419.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/27890
dc.identifier.doi10.1021/jp506089b
dc.description.abstract

The stability of the surface of vacuum-cleaved topological insulator Bi2Se3 single crystals is investigated with high-resolution synchrotron-based photoelectron spectroscopy. While the surface is stable at room temperature in vacuum, a Bi2 layer always forms at the surface of Bi2Se3 upon even brief (5 min) exposure to atmosphere. This is accompanied by a depletion of selenium in the near surface region and a 1.4 eV decrease in work function. The Bi2 surface is found to be stable upon return to ultrahigh vacuum conditions but is unstable with prolonged exposure to air, ultimately resulting in two possible different reconstructed surfaces, explaining previous contradictory results on long-term atmosphere exposure of Bi2Se3.

dc.publisherAmerican Chemical Society
dc.titleStability and Surface Reconstruction of Topological Insulator Bi2Se3 on Exposure to Atmosphere
dc.typeJournal Article
dcterms.source.volume118
dcterms.source.number35
dcterms.source.startPage20413
dcterms.source.endPage20419
dcterms.source.issn1932-7447
dcterms.source.titleJournal of Physical Chemistry C
curtin.departmentDepartment of Imaging and Applied Physics
curtin.accessStatusFulltext not available


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record