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Electron-phonon mass-enhancement parameter and the Fermi-line eccentricity at the Be(1010) surface from angle-resolved photoemission
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
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
Abstract [en]

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.
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Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-49740DOI: 10.1103/PhysRevB.61.12709OAI: oai:DiVA.org:liu-49740DiVA: diva2:270636
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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Johansson, Leif

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