Electron-phonon mass-enhancement parameter and the Fermi-line eccentricity at the Be(1010) surface from angle-resolved photoemission
2000 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 61, no 19, 12709-12712 p.Article in journal (Refereed) Published
We report angle-resolved photoemission measurements of the dispersion of the shallow surface state around (A)overbar and the surface electron-phonon mass-enhancement parameter lambda(s) at the Be(1010) surface. The eccentricity of the elliptical Fermi line formed by the surface state is found to be epsilon=0.684. We obtain lambda(s)=0.672 +/- 0.027 along the major axis and lambda(s)= 0.642+/-0.031 along the minor axis of the Fermi line. The lambda(s) values are about three times larger than the bulk lambda(b) = 0.24.
Place, publisher, year, edition, pages
2000. Vol. 61, no 19, 12709-12712 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-49740DOI: 10.1103/PhysRevB.61.12709OAI: oai:DiVA.org:liu-49740DiVA: diva2:270636