title: Au13-nAgn clusters: a remarkably simple trend.
abstract: The planar to three dimensional transition of Au13-nAgn clusters is investigated. To do so the low lying energy configurations for all possible concentrations (n values) are evaluated. Many thousands of possible conformations are examined. They are generated using the procedure developed by Rogan et al. in combination with the semi-empirical Gupta potential. A large fraction of these (the low lying energy ones) are minimized by means of Density Functional Theory (DFT) calculations. We employ the Tao, Perdew, Staroverov, and Scuseria (TPSS) meta-GGA functional and the Perdew, Burke and Ernzerhof (PBE) GGA functional, and compare their results. The effect of spin-orbit coupling is studied as well as the s-d hybridization. As usual in this context the results are functional-dependent. However, both functionals lead to agreement as far as trends are concerned, yielding just two relevant motifs, but their results differ quantitatively.
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile 7800024. m.kiwi.t@gmail.com and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago, Chile 9170124.
authors.forename: Francisco
authors.initials: F
authors.lastname: Munoz
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile 7800024. m.kiwi.t@gmail.com and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago, Chile 9170124.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Varas
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile 7800024. m.kiwi.t@gmail.com and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago, Chile 9170124.
authors.forename: José
authors.initials: J
authors.lastname: Rogan
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile 7800024. m.kiwi.t@gmail.com and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago, Chile 9170124.
authors.forename: Juan Alejandro
authors.initials: JA
authors.lastname: Valdivia
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile 7800024. m.kiwi.t@gmail.com and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago, Chile 9170124.
authors.forename: Miguel
authors.initials: M
authors.lastname: Kiwi
mesh_terms: D004583:Electrons; D006046:Gold / Q000737:chemistry*; D015394:Molecular Structure; D011789:Quantum Theory; D012834:Silver / Q000737:chemistry*
chemical_list: D012834:Silver; D006046:Gold