Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-10-04
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We present ab initio calculations of the quasiparticle decay times in a Buckminsterfullerene based on the many-body perturbation theory. A particularly lucid representation arises when the broadening of the quasiparticle states is plotted in the angular momentum and energy coordinates. In this representation the main spectroscopic features of the fullerene consist of two occupied nearly parabolic bands, and delocalized plane-wave-like unoccupied states with a few long-lived electronic states (the superatom molecular orbitals, SAMOs) embedded in the continuum of Fermi-liquid states. SAMOs have been recently uncovered experimentally by M. Feng, J. Zhao, and H. Petek [Science 320, 359 (2008)] using scanning tunneling spectroscopy. The present calculations offer an explanation of their unusual stability and unveil their long-lived nature making them good candidates for applications in the molecular electronics. From the fundamental point of view these states illustrate a concept of the Fock-space localization [B. L. Altshuler, Y. Gefen, A. Kamenev, and L. S. Levitov, Phys. Rev. Lett. 78, 2803 (1997)] with properties drastically different from the Fermi-liquid excitations.
Berakdar Jamal
Pavlyukh Yaroslav
No associations
LandOfFree
Superatom molecular orbitals: a new type of long-lived electronic states does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Superatom molecular orbitals: a new type of long-lived electronic states, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superatom molecular orbitals: a new type of long-lived electronic states will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-267818