TY  - JOUR
AU  - Khajetoorians, A. A.
AU  - Lounis, S.
AU  - Chilian, B.
AU  - Costa, A. T.
AU  - Zhou, L.
AU  - Mills, D. L.
AU  - Wiebe, J.
AU  - Wiesendanger, R.
TI  - Itinerant Nature of Atom-Magnetization Excitation by Tunneling Electrons
JO  - Physical review letters
VL  - 106
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-14114
SP  - 037205
PY  - 2011
N1  - We acknowledge funding from SFB668-A1 and GrK1286 of the DFG, from the ERC Advanced Grant FURORE, and from the Cluster of Excellence Nanospintronics funded by the Forschungs- und Wissenschaftsstiftung Hamburg. The research of D. L. M. and A. T. C. was supported by the U.S. Department of Energy, via Grant No. DE-FG03-84ER-45083. S. L. thanks the Alexander von Humboldt Foundation, and the DOE for partial support from the same DOE grant. Part of the computations were performed at the supercomputer JUROPA at the Forschungszentrum Julich.
AB  - We have performed single-atom magnetization curve (SAMC) measurements and inelastic scanning tunneling spectroscopy (ISTS) on individual Fe atoms on a Cu(111) surface. The SAMCs show a broad distribution of magnetic moments with 3.5 mu(B) being the mean value. ISTS reveals a magnetization excitation with a lifetime of 200 fsec which decreases by a factor of 2 upon application of a magnetic field of 12 T. The experimental observations are quantitatively explained by the decay of the magnetization excitation into Stoner modes of the itinerant electron system as shown by newly developed theoretical modeling.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000286739100012
DO  - DOI:10.1103/PhysRevLett.106.037205
UR  - https://juser.fz-juelich.de/record/14114
ER  -