Electronic properties of the graphene/6H-SiC(0001̅ ) interface: A first-principles study

Description:

This article discusses electronic properties of the graphene/6H-SiC(0001̅) interface.

Creator(s):
Creation Date: July 27, 2011
Partner(s):
UNT College of Arts and Sciences
Collection(s):
UNT Scholarly Works
Usage:
Total Uses: 66
Past 30 days: 0
Yesterday: 0
Creator (Author):
Jayasekera, Thushari

North Carolina State University

Creator (Author):
Xu, Shu

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

Publisher Info:
Publisher Name: American Physical Society
Place of Publication: [College Park, Maryland]
Date(s):
  • Creation: July 27, 2011
Description:

This article discusses electronic properties of the graphene/6H-SiC(0001̅) interface.

Degree:
Department: Physics
Department: Chemistry
Note:

Copyright 2011 American Physical Society. The following article appeared in Physical Review B, 84:3, http://link.aps.org/doi/10.1103/PhysRevB.84.035442

Note:

Abstract: Using calculations from first principles, we show how the structural and electronic properties of epitaxial graphene on 6H-SiC(0001̅) are determined by the geometry and the chemical functionalization of the interface region. We also demonstrate that these properties can be correctly captured only if a proper treatment of the van der Waals interactions is included in the theoretical description based on density functional theory. Our results reproduce the experimentally observed n-type doping of monolayer epitaxial graphene and prove the possibility of opening a sizable (150 meV) energy gap in the bilayer case under special growth conditions. Depending on the details of the bonding at the interface, the authors are able to interpret recent experimental observations and provide a clear insight into the mechanisms of charge transfer and interface stability.

Physical Description:

5 p.

Language(s):
Subject(s):
Keyword(s): graphene | interface region | electronic properties
Source: Physical Review B, 2011, College Park: American Physical Society
Partner:
UNT College of Arts and Sciences
Collection:
UNT Scholarly Works
Identifier:
  • DOI: 10.1103/PhysRevB.84.035442 |
  • ARK: ark:/67531/metadc139475
Resource Type: Article
Format: Text
Rights:
Access: Public
Citation:
Publication Title: Physical Review B
Volume: 84
Issue: 3
Pages: 5
Peer Reviewed: Yes