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@ARTICLE{Azpiroz:838270,
author = {Azpiroz, Julen Ibanez and dos Santos Dias, Manuel and
Blügel, Stefan and Lounis, Samir},
title = {{L}ongitudinal and transverse spin relaxation times of
magnetic single adatoms: {A}n ab initio analysis},
journal = {Physical review / B},
volume = {96},
number = {14},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2017-06913},
pages = {144410},
year = {2017},
abstract = {We present a systematic ab initio investigation of the
longitudinal and transverse spin relaxation times of
magnetic single adatoms deposited on metallic substrates.
Our analysis based on time-dependent density functional
theory shows that the longitudinal time T∥ is of order
femtosecond while the transverse time T⊥ is of order
picosecond, i.e. T⊥≫T∥. This comes as a consequence of
the different energy scales of the corresponding processes:
T∥ involves spin-density excitations of order eV, while
T⊥ is governed by atomic spin excitations of order meV.
Comparison to available inelastic scanning tunneling
spectroscopy dI/dV experimental curves shows that the order
of magnitude of T⊥ agrees well with our results. Regarding
T∥, the time scale calculated here is several orders of
magnitude faster than what has been measured up to now; we
therefore propose that an ultrafast laser pulse measuring
technique is required in order to access the ultrafast spin
dynamics described in this paper.},
cin = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
$I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
pnm = {142 - Controlling Spin-Based Phenomena (POF3-142) / 143 -
Controlling Configuration-Based Phenomena (POF3-143) /
Calculation of quantum spin-fluctuations in nano-magnets
$(jias19_20161101)$},
pid = {G:(DE-HGF)POF3-142 / G:(DE-HGF)POF3-143 /
$G:(DE-Juel1)jias19_20161101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000412434600005},
doi = {10.1103/PhysRevB.96.144410},
url = {https://juser.fz-juelich.de/record/838270},
}