Multiple coexisting intercalation structures of sodium in epitaxial graphene-SiC interfaces

Description:

This article discusses multiple coexisting intercalation structures of sodium in peitaxial graphene-SiC interfaces.

Creator(s):
Creation Date: March 9, 2012
Partner(s):
UNT College of Arts and Sciences
Collection(s):
UNT Scholarly Works
Usage:
Total Uses: 76
Past 30 days: 10
Yesterday: 0
Creator (Author):
Sandin, Andreas

North Carolina State University

Creator (Author):
Jayasekera, Thushari

Southern Illinois University at Carbondale

Creator (Author):
Rowe, J. E.

North Carolina State University

Creator (Author):
Kim, Ki Wook

North Carolina State University

Creator (Author):
Buongiorno Nardelli, Marco

University of North Texas; North Carolina State University; Oak Ridge National Laboratory

Creator (Author):
Dougherty, Daniel B.

North Carolina State University

Publisher Info:
Publisher Name: American Physical Society
Place of Publication: [College Park, Maryland]
Date(s):
  • Creation: March 9, 2012
Description:

This article discusses multiple coexisting intercalation structures of sodium in peitaxial graphene-SiC interfaces.

Degree:
Department: Physics
Department: Chemistry
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

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.

Physical Description:

5 p.

Language(s):
Subject(s):
Keyword(s): graphene | sodium | chemical doping
Source: Physical Review B, 2012, College Park: American Physical Society
Partner:
UNT College of Arts and Sciences
Collection:
UNT Scholarly Works
Identifier:
  • DOI: 10.1103/PhysRevB.85.125410
  • ARK: ark:/67531/metadc132988
Resource Type: Article
Format: Text
Rights:
Access: Public
Citation:
Publication Title: Physical Review Letters
Volume: 85
Issue: 12
Peer Reviewed: Yes