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Electronic Properties of Potassium-Doped Carbon Nanotube Lattice

Published online by Cambridge University Press:  10 February 2011

Susumu Saito
Susumu Saito*
Affiliation:
Department of Physics, Tokyo Institute of Technology 2-12-1 Oh-okayama, Meguro-ku, Tokyo 152-8551, Japan
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Abstract

We study the electronic structure of potassium-doped crystalline lattice of so-called (10.10) carbon nanotubes in the framework of the density-finctional theory. Tie stoichiometrv of the material studied is K2C80 which was originally proposed in designing the superconducting doped nanotube material based on tile size of dopants and the charge transfer being favorable for superconductivity. Electronic band dispersions obtained are actually found to be very similar to those of the pristine (10,10) nanotube lattice with the upward shift of the Fermi energy by 1 eV above the second conduction-band miinimum. Tie system therefore possesses higher Fermi-level density of states than the pristine material with rather sinmple charge transfer from K to C sites, and is confirned to be a good candidate for a naxiotube superconductor.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 593: Symposium U – Amorphous & Nanostructured Carbon , 1999 , 161
Copyright
Copyright © Materials Research Society 2000

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References

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