Details

Autor(en) / Beteiligte

• Dwivedi, Sharad
• Ahmad, Sk. Safique
• Manna, Santanu
• Datta, Biswa Nath

Titel

On the Dynamics of Transverse Domain Walls in Ferromagnetic Heterostructures with Nonlinear Dissipative Effects

Ist Teil von

• Mathematical Modelling and Scientific Computing with Applications, p.265-277

Ort / Verlag

Singapore: Springer Singapore

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This work delineates the investigation of static and dynamical behavior of transverse domain walls in ferromagnetic heterostructure in which the thin ferromagnetic layer is sandwiched between a heavy metal and a metal oxide layers. We consider the metallic ferromagnet with high perpendicular magnetic anisotropy and exhibits structural inversion asymmetry. The presence of a strong inversion asymmetry in the ferromagnetic material leads to additional spin-orbit coupling torque terms into the dynamics qualitatively different from the standard spin-transfer torques. The evolution of magnetization inside the ferromagnetic layer is governed by the one-dimensional model of generalized Landau-Lifshitz-Gilbert-Slonczewski equation consisting of the standard spin transfer and spin-orbit coupling torque terms along with the nonlinear dissipation factors viz. viscous and dry-friction. Under this framework, first, we establish the static magnetization profile in the two faraway domains in the presence of transverse magnetic field once the electric and longitudinal magnetic fields are switched off. Then, by means of regular perturbation expansion method, we derive the zero order traveling wave solutions under the influence of small applied magnetic field and spin-polarized electric currents.