Persistent orbital degeneracy in carbon nanotubes

Journal Article (Journal Article)

The quantum-mechanical orbitals in carbon nanotube quantum dots are doubly degenerate over a large number of states. We argue that this experimental observation indicates that electrons are reflected without mode mixing at the nanotube-metal contacts. Two electrons occupying a pair of degenerate orbitals ("shell") are found to form a triplet state starting from zero magnetic field. Finally, we observe unexpected low-energy excitations at complete filling of a four-electron shell. © 2006 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Makarovski, A; An, L; Liu, J; Finkelstein, G

Published Date

  • November 6, 2006

Published In

Volume / Issue

  • 74 / 15

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.74.155431

Citation Source

  • Scopus