Theory of superconductivity of carbon nanotubes and graphene
arXiv:cond-mat/0611452 · doi:10.1143/JPSJ.76.033702
Abstract
We present a new mechanism of carbon nanotube superconductivity that originates from edge states which are specific to graphene. Using on-site and boundary deformation potentials which do not cause bulk superconductivity, we obtain an appreciable transition temperature for the edge state. As a consequence, a metallic zigzag carbon nanotube having open boundaries can be regarded as a natural superconductor/normal metal/superconductor junction system, in which superconducting states are developed locally at both ends of the nanotube and a normal metal exists in the middle. In this case, a signal of the edge state superconductivity appears as the Josephson current which is sensitive to the length of a nanotube and the position of the Fermi energy. Such a dependence distinguishs edge state superconductivity from bulk superconductivity.
arXiv comment5 pages, 2 figures
References in corpus (10)
- Observation of zigzag and armchair edges of graphite using scanning tunneling microscopy and spectroscopy
- Scanned Probe Microscopy of Electronic Transport in Carbon Nanotubes
- High-Tc superconductivity in entirely end-bonded multi-walled carbon nanotubes
- Scanning tunneling microscopy and spectroscopy studies of graphite edges
- Stabilization mechanism of edge states in graphene
- Room temperature Peierls distortion in small radius nanotubes
- Gauge field for edge state in graphene
- Electron-phonon interaction in ultrasmall-radius carbon nanotubes
- Controlling edge states of zigzag carbon nanotubes by the Aharonov-Bohm flux
- Singlet superconductivity phase in carbon nanotubes
Cited by in corpus (15)
- Electron-Electron Interactions in Graphene: Current Status and Perspectives
- Edge states in Graphene: from gapped flat band to gapless chiral modes
- Tight--binding description of the quasiparticle dispersion of graphite and few--layer graphene
- Raman Scattering at Pure Graphene Zigzag Edges
- BCS superconductivity of Dirac electrons in graphene layers
- Andreev reflection in graphene nanoribbons
- Magnetization Measurement of a Possible High-Temperature Superconducting State in Amorphous Carbon Doped with Sulfur
- Local density of states at zigzag edge of carbon nanotubes and graphene
- Intrinsic strength and failure behaviors of ultra-small single-walled carbon nanotubes
- Magnetism as a mass term of the edge states in graphene
- Hamiltonian decomposition for bulk and surface states
- Aharanov-Bohm effect for the edge states of zigzag carbon nanotubes
- Disorder-induced superconductivity in ropes of carbon nanotubes
- Quantum Holonomies in Graphene Wormholes
- Solitons and spin transport in graphene boundary