%0 Journal Article
%A Chilian, B.
%A Khajetoorians, A.A.
%A Lounis, S.
%A Costa, A.T.
%A Mills, D.L.
%A Wiebe, J.
%A Wiesendanger, R.
%T Anomalously large g factor of single atoms adsorbed on a metal substrate
%J Physical review / B
%V 84
%N 21
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-19948
%P 212401
%D 2011
%Z We would like to thank W. Wulfhekel and P. Gambardella for fruitful discussions. We acknowledge funding from Grants No. SFB668-A1 and No. GrK1286 of the DFG, from ERC Advanced Grant "FURORE," and from the Cluster of Excellence "Nanospintronics." The research of D. L. M. and A. T. C. was supported by the US Department of Energy via Grant No. DE-FG03-84ER-45083. S. L. acknowledges the support of HGF-YIG Programme No. VH-NG-717.
%X We have performed inelastic scanning tunneling spectroscopy (ISTS) on individual Fe atoms adsorbed on a Ag(111) surface. ISTS reveals a magnetization excitation with a lifetime of about 400 fs, which decreases linearly upon application of a magnetic field. Surprisingly, we find that the g factor, which characterizes the shift in energy of the excitation in a magnetic field, is g = 3.1 instead of the expected value of 2. This very large g shift can be understood when considering the complete electronic structure of both the Ag(111) surface state and the Fe atom, as shown by ab initio calculations of the magnetic susceptibility.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000297762300001
%R 10.1103/PhysRevB.84.212401
%U https://juser.fz-juelich.de/record/19948