Intratube quantum dots showing particle-in-a-box-like states with level spacings up to 200meV are realized in metallic single-walled carbon nanotubes by means of low dose medium energy Ar irradiation. Fourier transform scanning tunneling spectroscopy compared to results of a Fabry-Perot electron resonator model yields clear signatures for inter- and intra-valley scattering of electrons confined between consecutive irradiation-induced defects (inter-defects distance < 10nm). Effects arising from lifting the degeneracy of the Dirac cones within the first Brillouin zone are also observed.
@article{arxiv.0812.3883,
title = {Electron Scattering in Intrananotube Quantum Dots},
author = {G. Buchs and D. Bercioux and P. Ruffieux and P. Groening and H. Grabert and O. Groening},
journal= {arXiv preprint arXiv:0812.3883},
year = {2009}
}