Open AccessSurface Fermi contours and phonon anomalies at the surface of the random alloy
Author(s) -
Michio Okada,
Eli Rotenberg,
S. D. Kevan,
J. Schäfer,
E. W. Plummer
Publication year - 2021
Publication title -
journal of physics communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.407
H-Index - 17
ISSN - 2399-6528
DOI - 10.1088/2399-6528/ac1049
Subject(s) - condensed matter physics , fermi surface , phonon , surface (topology) , alloy , dispersion (optics) , materials science , surface phonon , focus (optics) , fermi gamma ray space telescope , prime (order theory) , physics , superconductivity , optics , geometry , mathematics , metallurgy , combinatorics
The impact of compositional disorder on physical properties is a subject of prime focus in many materials systems. In this paper, we report photoemission measurements of Mo 1− x Re x (110)-(1 × 1)H alloy surfaces to probe the relationship between the surface Fermi contours and giant Kohn anomalies observed in the surface phonon dispersion relations. Our measured nesting vectors precisely predict the composition dependence of the anomalous wave vectors.