TY - JOUR
T1 - Intrinsic nonadiabatic topological torque in magnetic skyrmions and vortices
AU - Akosa, Collins Ashu
AU - Ndiaye, Papa Birame
AU - Manchon, Aurélien
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/2/28
Y1 - 2017/2/28
N2 - We propose that topological spin currents flowing in topologically nontrivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic nonadiabatic torque of the form Tt∼[(∂xm×∂ym)·m]∂ym. We show that this torque, which is absent in one-dimensional domain walls and/or nontopological textures, is responsible for the enhanced nonadiabaticity parameter observed in magnetic vortices compared to one-dimensional textures. The impact of this torque on the motion of magnetic skyrmions is expected to be crucial, especially to determine their robustness against defects and pinning centers.
AB - We propose that topological spin currents flowing in topologically nontrivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic nonadiabatic torque of the form Tt∼[(∂xm×∂ym)·m]∂ym. We show that this torque, which is absent in one-dimensional domain walls and/or nontopological textures, is responsible for the enhanced nonadiabaticity parameter observed in magnetic vortices compared to one-dimensional textures. The impact of this torque on the motion of magnetic skyrmions is expected to be crucial, especially to determine their robustness against defects and pinning centers.
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U2 - 10.1103/PhysRevB.95.054434
DO - 10.1103/PhysRevB.95.054434
M3 - Article
AN - SCOPUS:85014676514
VL - 95
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 5
M1 - 054434
ER -