337 citations · 952 across the 17 of their papers we have counts for
5 papers · 1 filter
Electronic shell and supershell structure in graphene flakes
M. Manninen, H. P. Heiskanen, J. Akola
We use a simple tight-binding (TB) model to study electronic properties of free graphene flakes. Valence electrons of triangular graphene flakes show a shell and supershell structu…
Sodium atoms and clusters on graphite: a density functional study
K. Rytkonen, J. Akola, M. Manninen
Sodium atoms and clusters (N<5) on graphite (0001) are studied using density functional theory, pseudopotentials and periodic boundary conditions. A single Na atom is observed to b…
Close-Packing of Clusters: Application to Al_100
K. Manninen, J. Akola, M. Manninen
The lowest energy configurations of close-packed clusters up to N=110 atoms with stacking faults are studied using the Monte Carlo method with Metropolis algorithm. Two types of co…
Thermal expansion in small metal clusters and its impact on the electric polarizability
S. Kümmel, J. Akola, M. Manninen
The thermal expansion coefficients of clusters with and , and are obtained from {\it a…
Photoelectron spectra of aluminum cluster anions: Temperature effects and ab initio simulations
Jaakko Akola, Matti Manninen, Hannu Hakkinen +3
Photoelectron (PES) spectra from aluminum cluster anions (from 12 to 15 atoms) at various temperature regimes, were studied using ab-initio molecular dynamics simulations and exper…