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Structure and Electronic Properties of Diamond-Like Amorphous Carbon

Published online by Cambridge University Press:  22 February 2011

C. Z. Wang  and
K. M. Ho
C. Z. Wang
Affiliation:
Ames Laboratory and Department of Physics, Iowa State University, Ames, IA 50011
K. M. Ho
Affiliation:
Ames Laboratory and Department of Physics, Iowa State University, Ames, IA 50011
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Abstract

Amorphous carbon networks generated by quenching high-density liquid from hightemperature using a tight-binding molecular dynamics method are found to be dominated by tetrahedral bonding sites. The overall structural and electronic properties of these networks resemble those observed in experimental diamond-like amorphous carbon films produced by the mass-selected ion beam deposition technique. Our study shows that bonding and antibonding of π states associated with pairs and quartets of threefold “defected-atoms” embedded in the fourfold matrix yield a band gap of about 2 eV.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 349: Symposium T – Novel Forms of Carbon II , 1994 , 483
Copyright
Copyright © Materials Research Society 1994

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References

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