2009/03/04 by Katsuyoshi Matsushita, Jun Sato, Hiroshi Imamura
Physics and Astronomy · #Domain (mathematical analysis) #Domain wall (magnetism) #Magnetic domain #Magnetic properties of thin films #Magnetization #Magnetization dynamics #Micromagnetics #Microwave #Oscillation (cell signaling) #Quantum and electron transport phenomena #Topological Materials and Phenomena #Torque #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.3075555
published as J. Appl. Phys. 105, 07D525 (2009); · 3 pages, 3 figures
openalex publication_date 2009/03/04 · arxiv created 2009/03/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We studied magnetization dynamics of a geometrically confined domain wall under dc current by solving simultaneously the Landau–Lifshitz–Gilbert equation and diffusion equation for spin accumulation. We showed that the oscillation motion of the domain wall is driven by the spin-transfer torque and the dc current is converted to the ac voltage signal. The results mean that the geometrically confined domain wall is applicable as a source of microwave oscillator.