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research article

Empirical Monod-Beuneu relation of spin relaxation revisited for elemental metals

Szolnoki, L.
•
Kiss, A.
•
Forro, L.  
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2014
Physical Review B

Monod andBeuneu [P. Monod and F. Beuneu, Phys. Rev. B 19, 911 (1979)] established the validity of the ElliottYafet theory for elemental metals through correlating the experimental electron spin resonance linewidth with the so-called spin-orbit admixture coefficients and the momentum-relaxation theory. The spin-orbit admixture coefficients data were based on atomic spin-orbit splitting. We highlight two shortcomings of the previous description: (i) the momentum-relaxation involves the Debye temperature and the electron-phonon coupling whose variation among the elemental metals was neglected, (ii) the Elliott-Yafet theory involves matrix elements of the spin-orbit coupling (SOC), which are however not identical to the SOC induced energy splitting of the atomic levels, even though the two have similar magnitudes. We obtain the empirical spin-orbit admixture parameters for the alkali metals by considering the proper description of the momentum relaxation theory. In addition we present a model calculation, which highlights the difference between the SOC matrix element and energy splitting.

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Type
research article
DOI
10.1103/PhysRevB.89.115113
Web of Science ID

WOS:000332510300006

Author(s)
Szolnoki, L.
Kiss, A.
Forro, L.  
Simon, F.
Date Issued

2014

Publisher

Amer Physical Soc

Published in
Physical Review B
Volume

89

Issue

11

Article Number

115113

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPMC  
LPCM  
Available on Infoscience
April 14, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/102776
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