Anion photoelectron spectroscopy and theoretical calculations of Cu4On -/0 (n = 1-4): Identification of stable quasi-square structure for Cu4O4.We investigated Cu4On - (n = 1-4) clusters through a synergetic combination of mass-selected anion photoelectron spectroscopy and density functional theory calculations. 
Density functional theory
Anion photoelectron spectroscopy and theoretical calculations of Cu4On -/0 (n = 1-4): Identification of stable quasi-square structure for Cu4O4.We investigated Cu4On - (n = 1-4) clusters through a synergetic combination of mass-selected anion photoelectron spectroscopy and density functional theory calculations. 
anion photoelectron spectroscopy