1:30 PM - 3:30 PM
[14p-PA1-61] Theoretical Study of the Spin-current Induced by s-d scattering in Ferromagnetic Metals
Keywords:spintronics, theory, spin Hall effect
We theoretically investigate the time-reversal odd (T-odd) spin currents due to the s-d impurity scattering in ferromagnetic metals.
The spin Hall effect (SHE) have been attracted in order to realize novel spin current driven devices. The SHE has been mainly studied on nonmagnetic materials so far because it does not rely on broken time-reversal symmetry (TRS), that is, finite magnetic moments are not required. However, recently, some spin Hall-like effects have been experimentally observed in magnetic materials, whose spin currents have opposite TRS to SHE. These effects are considered to have different mechanisms from the ordinal SHE, and further analyses are demanded.
In this work, we focus on ferromagnetic 3d metals, and describe the behavior of spin current arising from s-d impurity scattering. As the result, we find that the T-odd spin current appears due to the LS-coupling in the impurity orbitals.
The spin Hall effect (SHE) have been attracted in order to realize novel spin current driven devices. The SHE has been mainly studied on nonmagnetic materials so far because it does not rely on broken time-reversal symmetry (TRS), that is, finite magnetic moments are not required. However, recently, some spin Hall-like effects have been experimentally observed in magnetic materials, whose spin currents have opposite TRS to SHE. These effects are considered to have different mechanisms from the ordinal SHE, and further analyses are demanded.
In this work, we focus on ferromagnetic 3d metals, and describe the behavior of spin current arising from s-d impurity scattering. As the result, we find that the T-odd spin current appears due to the LS-coupling in the impurity orbitals.