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Journal Article

Vibrational analysis of cesium on Ru(0001)

MPS-Authors
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He,  P.
Fritz Haber Institute, Max Planck Society;

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Jacobi,  Karl
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevB.53.3658.pdf
(Publisher version), 77KB

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Citation

He, P., & Jacobi, K. (1996). Vibrational analysis of cesium on Ru(0001). Physical Review B, 53(7), 3658-3661. doi:10.1103/PhysRevB.53.3658.


Cite as: https://hdl.handle.net/21.11116/0000-0009-B014-9
Abstract
We report a high-resolution electron-energy-loss spectroscopy study of the coverage dependence of the Cs-Ru stretch vibration at 300 K. Surprisingly, the frequency of Cs-Ru stretch vibration shifts upward by about 30% with Cs coverage for 0<~θ Cs <~0.19. Only a quarter of this shift can be explained through lateral dipole-dipole interaction. We discuss two further mechanisms that may cause the other part of the shift. A slight decrease of the stretch frequency for θCs>0.19 is associated with the metallization of the alkali-metal layer including a structural change.