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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
K-intercalated carbon systems: Effects of dimensionality and substrate
EPL, Volume 98, No. 6, Article 67003, Year 2012
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Description
Density functional theory is employed to investigate the electronic properties of K-intercalated carbon systems. Young's modulus indicates that the intercalation increases the intrinsic stiffness. For K-intercalated bilayer graphene on SiC(0001) the Dirac cone is maintained, whereas a trilayer configuration exhibits a small splitting at the Dirac point. Interestingly, in contrast to many other intercalated carbon systems, the presence of the SiC(0001) substrate does not suppress but rather enhances the charge carrier density. Reasonably high values are found for all systems, the highest carrier density for the bilayer. The band structure and electron-phonon coupling of free-standing K-intercalated bilayer graphene points to a high probability for superconductivity in this system. © 2012 Europhysics Letters Association.
Authors & Co-Authors
Kaloni, Thaneshwor P.
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Upadhyay-Kahaly, Mousumi
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Cheng, Yingchun
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Schwingenschlögl, Udo Erich
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Statistics
Citations: 26
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1209/0295-5075/98/67003
ISSN:
02955075
e-ISSN:
12864854
Research Areas
Environmental