TY - JOUR VL - 93 AV - public Y1 - 2004/09/10/ TI - Novel water overlayer growth on Pd(111) characterized with scanning tunneling microscopy and density functional theory IS - 11 N1 - The American Physical Society UR - http://dx.doi.org/10.1103/PhysRevLett.93.116101 PB - AMERICAN PHYSICAL SOC SN - 0031-9007 N2 - Scanning tunneling microscopy (STM) images of water submonolayers on Pd(111) reveal quasiperiodic and isolated adclusters with internal structure that would ordinarily be ascribed to icelike puckered hexagonal units. However, density functional theory and STM simulations contradict this conventional picture, showing instead that the water adlayers are composed mainly of flat-lying molecules arranged in planar water hexagons. A new rule for two dimensional (2D) water growth is offered that generates the structures observed experimentally from planar hexamer units. ID - discovery167439 A1 - Cerda, J A1 - Michaelides, A A1 - Bocquet, ML A1 - Feibelman, PJ A1 - Mitsui, T A1 - Rose, M A1 - Fomin, E A1 - Salmeron, M KW - TOTAL-ENERGY CALCULATIONS KW - WAVE BASIS-SET KW - ADSORPTION KW - FORMALISM KW - SURFACES KW - RU(0001) JF - PHYS REV LETT ER -