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@ARTICLE{Long:154961,
author = {Long, Nguyen H. and Mavropoulos, Phivos and Zimmermann,
Bernd and Bauer, David and Blügel, Stefan and Mokrousov,
Yuriy},
title = {{S}pin relaxation and spin {H}all transport in 5d
transition-metal ultrathin films},
journal = {Physical review / B},
volume = {90},
number = {6},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2014-04170},
pages = {064406},
year = {2014},
abstract = {The spin relaxation induced by the Elliott-Yafet mechanism
and the extrinsic spin Hall conductivity due to the skew
scattering are investigated in 5d transition-metal ultrathin
films with self-adatom impurities as scatterers. The values
of the Elliott-Yafet parameter and of the spin-flip
relaxation rate reveal a correlation with each other that is
in agreement with the Elliott approximation. At 10-layer
thickness, the spin-flip relaxation time in 5d
transition-metal films is quantitatively reported about few
hundred nanoseconds at atomic percent. This time scale is
one and two orders of magnitude shorter than the values in
Au and Cu thin films, respectively. The anisotropy effect of
the Elliott-Yafet parameter and of the spin-flip relaxation
rate with respect to the direction of the spin-quantization
axis in relation to the crystallographic axes is also
analyzed. We find that the anisotropy of the spin-flip
relaxation rate is enhanced due to the Rashba surface states
on the Fermi surface, reaching values as high as $97\%$ in
10-layer Hf(0001) film or $71\%$ in 10-layer W(110) film.
Finally, the spin Hall conductivity as well as the spin Hall
angle due to the skew scattering off self-adatom impurities
are calculated using the Boltzmann approach. Our
calculations employ a relativistic version of the
first-principles full-potential Korringa-Kohn-Rostoker Green
function method.},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000339994200005},
doi = {10.1103/PhysRevB.90.064406},
url = {https://juser.fz-juelich.de/record/154961},
}