Resonating-valence-bond ground state of lithium nanoclusters
Originally published in Physical Review B v.79 (2009): 035416. DOI: 10.1103/PhysRevB.79.035416
We have performed diffusion quantum Monte Carlo simulations of Li clusters showing that resonating-valence-bond (RVB) pairing correlations between electrons provide a substantial contribution to the cohesive energy. The RVB effects are identified in terms of electron transfers from s-like to p-like character, constituting a possible explanation for the breakdown of the Fermi-liquid picture observed in recent high-resolution Compton scattering experiments for bulk Li.
D. Nissenbaum, L. Spanu, C. Attaccalite, B. Barbiellini, and A. Bansil. "Resonating-valence-bond ground state of lithium nanoclusters" Physics Faculty Publications (2009).
Available at: http://works.bepress.com/bbarbiellini/16