Shifting the surface Kohn anomaly of H-saturated Mo(110) by alloying the bulk 
with Re

Okada, M.; Flach, B.; Hulpke, E.; Steinhögl, W.; Plummer, E. W.

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Shifting the surface Kohn anomaly of H-saturated Mo(110) by alloying the bulk with Re

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Flach, B.
Max Planck Society;

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Hulpke, E.
Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Steinhögl, W.
Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Okada, M., Flach, B., Hulpke, E., Steinhögl, W., & Plummer, E. W. (2002). Shifting the surface Kohn anomaly of H-saturated Mo(110) by alloying the bulk with Re. Surface Science, 498(1-2), L78-L84.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-179B-E

Abstract

The topology of the Fermi surface of a pure transition metal can be manipulated by the formation of a random alloy with a similar metal. The giant anomaly in the helium atom inelastic scattering spectra is used to probe the alloying-induced changes in the two-dimensional Fermi surface nesting. The critical wave vector of the giant anomaly is systematically shifted for the H-saturated (110) surface of the random alloy Mo_1-xRe_x, by varying x (0 less than or equal to x less than or equal to 0.25). Here, it is demonstrated that the giant anomaly is quite sensitive to changes in the Fermi topology induced by alloying. (C) 2001 Published by Elsevier Science B.V.