TY - JOUR
T1 - Ultrafast demagnetization dynamics of thin Fe/W(110) films
T2 - Comparison of time- and spin-resolved photoemission with time-resolved magneto-optic experiments
AU - Weber, A.
AU - Pressacco, F.
AU - Günther, S.
AU - Mancini, E.
AU - Oppeneer, P. M.
AU - Back, C. H.
PY - 2011/10/20
Y1 - 2011/10/20
N2 - We report the results of time- and spin-resolved photoemission (TR-SPES) and time-resolved magneto-optical Kerr effect experiments on iron thin films. In particular, the extracted demagnetization times for both techniques are compared. It is shown that while for the Kerr measurements the demagnetization times are always limited by our time resolution (250±30 fs), for the TR-SPES measurements this situation occurs only for relative quenching below 30%. Above this value, the measured TR-SPES demagnetization time exceeds 500 fs. Different demagnetization probes can hence track different demagnetization times.
AB - We report the results of time- and spin-resolved photoemission (TR-SPES) and time-resolved magneto-optical Kerr effect experiments on iron thin films. In particular, the extracted demagnetization times for both techniques are compared. It is shown that while for the Kerr measurements the demagnetization times are always limited by our time resolution (250±30 fs), for the TR-SPES measurements this situation occurs only for relative quenching below 30%. Above this value, the measured TR-SPES demagnetization time exceeds 500 fs. Different demagnetization probes can hence track different demagnetization times.
UR - http://www.scopus.com/inward/record.url?scp=80155211779&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.84.132412
DO - 10.1103/PhysRevB.84.132412
M3 - Article
AN - SCOPUS:80155211779
SN - 1098-0121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 13
M1 - 132412
ER -