Meissner effect in honeycomb arrays of multi-walled carbon nanotubes
arXiv:cond-mat/0703599 · doi:10.1103/PhysRevB.76.245424
Abstract
We report Meissner effect for type-II superconductors with a maximum Tc of 19 K, which is the highest value among those in new-carbon related superconductors, found in the honeycomb arrays of multi-walled CNTs (MWNTs). Drastic reduction of ferromagnetic catalyst and efficient growth of MWNTs by deoxidization of catalyst make the finding possible. The weak magnetic anisotropy, superconductive coherence length (- 7 nm), and disappearance of the Meissner effect after dissolving array structure indicate that the graphite structure of an MWNT and those intertube coupling in the honeycomb array are dominant factors for the mechanism.
arXiv comment6 pages
References in corpus (12)
- Superconductivity in diamond
- Superconductivity in the Intercalated Graphite Compounds C6Yb and C6Ca
- Superconductivity of bulk CaC6
- Superconductivity in Ropes of Single-Walled Carbon Nanotubes
- High-Tc superconductivity in entirely end-bonded multi-walled carbon nanotubes
- Indication of Superconductivity at 35 K in Graphite-Sulfur Composites
- Electron-phonon interaction in ultrasmall-radius carbon nanotubes
- Microscopic model of superconductivity in carbon nanotubes
- On superconductivity in armchair carbon nanotubes
- Consistency of superconducting correlations with one-dimensional electron interactions in carbon nanotubes
- Superconducting diamagnetic fluctuations in ropes of carbon nanotubes
- A theory of superconductivity in multi-walled carbon nanotubes