TY - JOUR
T1 - Spin texture motion in antiferromagnetic and ferromagnetic nanowires
AU - Rodrigues, Davi R.
AU - Everschor-Sitte, Karin
AU - Tretiakov, Oleg A.
AU - Sinova, Jairo
AU - Abanov, Ar
N1 - Funding Information:
O.A.T. acknowledges support by the Grants-in-Aid for Scientific Research (No. 25247056, No. 15H01009, No. 17K05511, and No. 17H05173) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. K.E.-S. acknowledges funding from the German Research Foundation (DFG) under the Project No. EV 196/2-1. J.S. acknowledges funding from the Alexander von Humboldt Foundation, the ERC Synergy Grant SC2 (No. 610115), the Transregional Collaborative Research Center (SFB/TRR) 173 SPIN+X, and Agency of the Czech Republic Grant No. 14-37427G.
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/5/8
Y1 - 2017/5/8
N2 - We propose a Hamiltonian dynamics formalism for the current and magnetic field driven dynamics of ferromagnetic and antiferromagnetic domain walls in one-dimensional systems. To demonstrate the power of this formalism, we derive Hamilton equations of motion via Poisson brackets based on the Landau-Lifshitz-Gilbert phenomenology, and add dissipative dynamics via the evolution of the energy. We use this approach to study current induced domain-wall motion and compute the drift velocity. For the antiferromagnetic case, we show that a nonzero magnetic moment is induced in the domain wall, which indicates that an additional application of a magnetic field would influence the antiferromagnetic domain-wall dynamics. We consider both cases of the magnetic field being parallel and transverse to the Néel field. Based on this formalism, we predict an orientation switch mechanism for antiferromagnetic domain walls which can be tested with the recently discovered Néel spin orbit torques.
AB - We propose a Hamiltonian dynamics formalism for the current and magnetic field driven dynamics of ferromagnetic and antiferromagnetic domain walls in one-dimensional systems. To demonstrate the power of this formalism, we derive Hamilton equations of motion via Poisson brackets based on the Landau-Lifshitz-Gilbert phenomenology, and add dissipative dynamics via the evolution of the energy. We use this approach to study current induced domain-wall motion and compute the drift velocity. For the antiferromagnetic case, we show that a nonzero magnetic moment is induced in the domain wall, which indicates that an additional application of a magnetic field would influence the antiferromagnetic domain-wall dynamics. We consider both cases of the magnetic field being parallel and transverse to the Néel field. Based on this formalism, we predict an orientation switch mechanism for antiferromagnetic domain walls which can be tested with the recently discovered Néel spin orbit torques.
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U2 - 10.1103/PhysRevB.95.174408
DO - 10.1103/PhysRevB.95.174408
M3 - Article
AN - SCOPUS:85024403846
VL - 95
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 17
M1 - 174408
ER -