Transverse spin diffusion in ferromagnets

Physical Review B - Condensed Matter and Materials Physics

Volumn 79, Issue 9, 2009, Pages

  Tserkovnyak, Yaroslav ^a   Hankiewicz, E M ^b   Vignale, Giovanni ^c  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b UNIVERSITY OF WÜRZBURG   (Germany)

^c UNIVERSITY OF MISSOURI   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 64149099334     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.094415     Document Type: Article

References (29)

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19. It is natural to also wonder about a possible additional spin current of the form ji t m, which does not break time-reversal symmetry. Such spin current leads to a wave-vector-dependent correction to the effective gyromagnetic ratio, which is very small in practice. It parallels the structure of the spin pumping in magnetic nanostructures, which consists of the dominant dissipative piece of the form m× t m and a smaller piece of the form t m. The latter merely causes a slight rescaling of the gyromagnetic ratio. While the dissipative piece of the spin pumping has been unambiguously established in a number of experiments, the small correction to the gyromagnetic ratio is yet to be observed.
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