| Description: | In this article, the authors 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. |
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| Creator(s): | |
| Creation Date: | March 9, 2012 |
| Partner(s): |
UNT College of Arts and Sciences
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| Collection(s): |
UNT Scholarly Works
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| Usage: |
Total Uses: 26
Past 30 days: 4
Yesterday: 0
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| Creator (Author): |
Sandin, Andreas
North Carolina State University |
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| Creator (Author): |
Jayasekera, Thushari
Southern Illinois University-Carbondale |
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| Creator (Author): |
Rowe, J.E.
North Carolina State University |
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| Creator (Author): |
Kim, Ki Wook
North Carolina State University |
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| Creator (Author): |
Buongiorno Nardelli, Marco
North Carolina State University; Oak Ridge National Laboratory |
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| Creator (Author): |
Dougherty, Daniel B.
North Carolina State University |
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| Publisher Info: |
Publisher Name: American Physical Society
Place of Publication: [College Park, Maryland]
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| Original Creation Date: | March 9, 2012 | |
| Description: | In this article, the authors 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. |
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| Degree: |
Department:
Physics
Department:
Chemistry
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| 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 |
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| Physical Description: |
5 p. |
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| Keyword(s): | graphene | sodium | chemical doping | |
| Source: | Physical Review B, 2012, College Park: American Physical Society | |
| Partner: |
UNT College of Arts and Sciences
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| Collection: |
UNT Scholarly Works
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| Identifier: |
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| Resource Type: | Article | |
| Format: | Text | |
| Rights: |
Access:
Public
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| Citation: |
Publication Title: Physical Review Letters
Volume: 85
Issue: 12
Peer Reviewed: Yes
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