Eur. Phys. J. B 47, 333-336 (2005)
https://doi.org/10.1140/epjb/e2005-00349-2

Strong pair correlation in small metallic nanoclusters: the energy spectrum

¹ L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 117334, Moscow, Russia
² Max-Planck Institute for Physics of Complex Systems, Dresden, 01187, Germany
³ Lawrence Berkeley Laboratory, University of California at Berkeley, CA 94720, USA

Corresponding author: ^a vzkresin@lbl.gov

Received: 19 August 2005
Published online: 28 October 2005

Abstract

The electronic shell structure in small metallic nanoclusters leads to high level degeneracy, which is strongly beneficial for the appearance of pair correlation. This results in a high value of T_c as well as in the appearance of a superconducting gap which causes a strong modification of the energy spectrum. The electronic energy spectrum becomes strongly temperature dependent. Consequently, specific experiments to demonstrate the presence of pair correlation can be proposed.