Superconductivity in carbon nanotubes coupled to transition metal atoms

Abstract

The electronic structures of zig-zag and arm-chair single-walled carbon nanotubes interacting with a transitional-metal atomic nanowire of Ni have been determined. The Ni 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 $\sim$ 10-50 K. The signs of superconductivity seen in ``ropes'' of nanotubes may also be related to the effect of intrinsic transition-metal impurities.

4 pages and two figures

References in corpus (4)

• Binding energies and electronic structures of adsorbed titanium chains on carbon nanotubes
• Microscopic model of superconductivity in carbon nanotubes
• On superconductivity in armchair carbon nanotubes
• Electronic Mechanism of Superconductivity in the Cuprates, C${}_{60}$, and Polyacenes

Cited by in corpus (4)

• Magnetism and structure at a vacancy in graphene
• The ground state of clean and defected graphene: Coulomb interactions of massless Dirac fermions, pair-distribution functions and spin-polarized phases
• Electronic structure and the minimum conductance of a graphene layer on SiO2 from density-functional methods.
• Coulomb interactions of massless Dirac fermions in graphene; pair-distribution functions and exchange-driven spin-polarized phases