TY  - JOUR
AU  - Loukakos, P. A.
AU  - Lisowski, M.
AU  - Bihlmayer, G.
AU  - Blügel, S.
AU  - Wolf, M.
AU  - Bovensiepen, U.
TI  - Dynamics of the Self-Energy of the Gd(0001) Surface State Probed by Femtosecond Photoemission Spectroscopy
JO  - Physical review letters
VL  - 98
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-56613
SP  - 097401
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000244592100055
DO  - DOI:10.1103/PhysRevLett.98.097401
UR  - https://juser.fz-juelich.de/record/56613
ER  -