Journal Article

PreJuSER-56613

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dynamics of the Self-Energy of the Gd(0001) Surface State Probed by Femtosecond Photoemission Spectroscopy

Loukakos, P. A. ; Lisowski, M. ; Bihlmayer, G.FZJ* ; Blügel, S.FZJ* ; Wolf, M. ; Bovensiepen, U.

2007
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.98.097401

Abstract: Transient changes of the complex self-energy of the 5d(z)(2) surface state on Gd(0001) after intense optical excitation are investigated by femtosecond time-resolved photoemission. We observe an ultrafast (< 100 fs) broadening of the linewidth due to e-e scattering followed by a decrease of the binding energy due to thermal expansion of the lattice. In addition, we resolve a periodic breathing of the band structure which originates from a coherent phonon. An amplitude of 1 pm is derived from the binding energy shift upon lattice displacement calculated by density functional theory.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Center of Nanoelectronic Systems for Information Technology (CNI)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2007

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