Multiple coexisting intercalation structures of sodium in epitaxial graphene-SiC interfaces Metadata
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- Main Title Multiple coexisting intercalation structures of sodium in epitaxial graphene-SiC interfaces
Author: Sandin, AndreasCreator Type: PersonalCreator Info: North Carolina State University
Author: Jayasekera, ThushariCreator Type: PersonalCreator Info: Southern Illinois University at Carbondale
Author: Rowe, J. E.Creator Type: PersonalCreator Info: North Carolina State University
Author: Kim, Ki WookCreator Type: PersonalCreator Info: North Carolina State University
Author: Buongiorno Nardelli, MarcoCreator Type: PersonalCreator Info: University of North Texas; North Carolina State University; Oak Ridge National Laboratory
Author: Dougherty, Daniel B.Creator Type: PersonalCreator Info: North Carolina State University
Name: American Physical SocietyPlace of Publication: [College Park, Maryland]
- Creation: 2012-03-09
- Content Description: This article discusses multiple coexisting intercalation structures of sodium in peitaxial graphene-SiC interfaces.
- Physical Description: 5 p.
- Keyword: graphene
- Keyword: sodium
- Keyword: chemical doping
- Journal: Physical Review B, 2012, College Park: American Physical Society
- Publication Title: Physical Review Letters
- Volume: 85
- Issue: 12
- Peer Reviewed: True
Name: UNT Scholarly WorksCode: UNTSW
Name: UNT College of Arts and SciencesCode: UNTCAS
- Rights Access: public
- DOI: 10.1103/PhysRevB.85.125410
- Archival Resource Key: ark:/67531/metadc132988
- Academic Department: Physics
- Academic Department: Chemistry
- Display Note: Copyright 2012 American Physical Society. The following article appeared in Physical Review B, 108:8, http://link.aps.org/doi/10.1103/PhysRevB.85.125410
- Display Note: Abstract: We show using scanning tunneling microscopy, spectroscopy, and ab initio calculations that two intercalation structures coexist for Na in epitaxial graphene on SiC(0001). Intercalation takes place at room temperature, and Na electron dopes the graphene. It inserts in between single-layer graphene and the interfacial layer and also penetrates beneath the interfacial layer and decouples it to form a second graphene layer. Decoupling is accelerated by annealing and is verified by Na deposition onto the interface layer combined with computational modeling of the two new decoupled buffer layer structures.