We report observation of the Coulomb blockade effect in a metal-on-tube metal/multiwall carbon nanotube (MWNT)/metal structure (metal=Ti or Pt/Au). We find that the tunnel barrier is located in the interface between the MWNT and the metal electrode, and that the tunnel resistance depends crucially on the electrode material. A possible origin of the high contact barrier is discussed.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)