ac and dc current-induced motion of a 360 degrees domain wall
Author(s)Mascaro, Mark D.; Ross, Caroline A.
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he response of 360° [360 degrees]domain walls in narrow magnetic stripes to applied dc and ac currents, investigated by micromagnetic simulation, differs qualitatively from the response of 180° [180 degrees] domain walls. The 360° [360 degrees] domain-wall velocity scales with a dc current but is independent of an applied magnetic field along the stripe. An annihilation process occurs at a critical dc current density that varies with the applied field. When a 360° [360 degrees] wall is perturbed, it oscillates at a characteristic frequency in the gigahertz range which is tunable by the applied magnetic field, and an ac current applied at half the characteristic frequency excites a resonant response.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering
Physical review B
American Physical Society
Mascaro, Mark, and C. Ross. “ac and dc current-induced motion of a 360° domain wall.” Physical Review B 82.21 (2010) : n. pag. ©2010 The American Physical Society
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