| Issue |
Europhys. Lett.
Volume 62, Number 3, May 2003
|
|
|---|---|---|
| Page(s) | 405 - 411 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00410-4 | |
| Published online | 01 April 2003 | |
Superconductivity in carbon nanotubes coupled to transition metal atoms
1
Department of Physics,
UAE University P.O. Box 17551, Al-Ain, United Arab Emirates
2
National Research Council - Ottawa, Canada, K1A 0R6
Corresponding authors: ntit@uaeu.ac.ae, chandre@nrcphy1.phy.nrc.ca
Received:
11
November
2002
Accepted:
6
March
2003
The electronic structures of zigzag and armchair single-walled
carbon nanotubes interacting with a transitional-metal atomic
nanowire of 
have been determined. The
nanowire creates a large electron density of states (DOS) at the
Fermi energy. The dependence of the enhanced DOS on the spin
state and positioning of the transition metal wire (inside or
outside the nanotube) is studied. Preliminary estimates of the
electron-phonon interaction suggest that such systems may have a
superconducting transition temperature of 
–50
.
The signs of superconductivity seen in “ropes” of nanotubes may
also be related to the effect of intrinsic transition metal
impurities.
PACS: 74.20.-z – Theories and models of superconducting state / 61.48.+c – Fullerenes and fullerene-related materials / 61.50.Ah – Theory of crystal structure, crystal symmetry; calculations and modeling
© EDP Sciences, 2003
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