Modulation of Surface Charge Transfer through Competing Long-Range Repulsive versus Short-Range Attractive Interactions

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• 作者：J. Fraxedas ; S. Garci虂a-Gil ; S. Monturet ; N. Lorente ; I. Ferna虂ndez-Torrente ; K. J. Franke ; J. I. Pascual ; A. Vollmer ; R.-P. Blum ; N. Koch ; P. Ordejo虂n
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：September 29, 2011
• 年：2011
• 卷：115
• 期：38
• 页码：18640-18648
• 全文大小：1217K
• 年卷期：v.115,no.38(September 29, 2011)
• ISSN：1932-7455

文摘

We report a combined experimental and theoretical study of the modulation of surface charge transfer on the tetrathiafulvalene (TTF)/Au(111) interface as a function of coverage in the submonolayer regime by combining low-temperature scanning tunneling microscopy, high-resolution photoemission spectroscopy using synchrotron radiation, and density functional theory (DFT) calculations. The modulation is induced by the competition between long-range repulsive Coulombic interactions and short-range attractive hydrogen-bonding interactions. The system shows the characteristic pattern evolution, from monomeric stripes at low coverages to two-dimensional islands, with the formation of labyrinths in the crossover.