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An STM investigation of the Cu(110)−c(6 × 2)O system

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Coulman,  Donald J.
Fritz Haber Institute, Max Planck Society;

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Wintterlin,  Joost
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Barth,  Johannes V.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Coulman, D. J., Wintterlin, J., Barth, J. V., Ertl, G., & Behm, R. J. (1990). An STM investigation of the Cu(110)−c(6 × 2)O system. Surface Science, 240(1-3), 151-162. doi:10.1016/0039-6028(90)90738-T.


Cite as: https://hdl.handle.net/21.11116/0000-0007-6899-8
Abstract
The formation of the c(6 × 2)−O phase on a Cu(110) surface, after completion of the (2 × 1)−O structure, was observed by scanning tunneling microscopy (STM). The phase is composed of isotropic structural elements on fourfold hollow sites of the substrate lattice, which form a quasi-hexagonal array and manifest themselves as large protrusions in the STM images. Individual units of this type are mobile and also represent stable nuclei within a (2 × 1) surrounding. Nucleation is activated and occurs preferentially at steps, in contrast to previous findings with the (2 × 1) phase. Structural implications of additional weak features in high resolution images and of the observed change in two-dimensional density of Cu atoms are discussed.