Analysis of ultranarrow ferromagnetic domain walls
نویسندگان
چکیده
منابع مشابه
Direct imaging of current-driven domain walls in ferromagnetic nanostripes
To better understand the response of domain walls to current-induced spin transfer torques, we have directly imaged the internal magnetic structure of domain walls in current-carrying ferromagnetic nanostripes. Domain wall images were acquired both while a constant current was flowing through the wire, and after applying current pulses. Domain walls ranging from vortex walls in wide 1 m wires t...
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Gabriel D. Chaves-O'Flynn, Daniel Bedau, Eric Vanden-Eijnden, A. D. Kent D. L. Stein Department of Physics, New York University, 4Washington Place, New York, New York 10003, USA and Courant Institute of Mathematical Sciences, New York University, New York, New York, 10012 The stability of 2π domain walls in ferromagnetic nanorings is investigated via the calculation of the energy barrier that s...
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In most ferromagnets the magnetization rotates from one domain to the next with no preferred handedness. However, broken inversion symmetry can lift the chiral degeneracy, leading to topologically rich spin textures such as spin spirals and skyrmions through the Dzyaloshinskii-Moriya interaction (DMI). Here we show that in ultrathin metallic ferromagnets sandwiched between a heavy metal and an ...
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We predict a fast domain wall (DW) motion induced by a thermal gradient across a nanoscopic ferromagnetic stripe of MnBi. The driving mechanism is an exchange torque fueled by magnon accumulation at the DWs. Depending on the thickness of the sample, both hot-to-cold and cold-to-hot DW motion directions are possible. The finding unveils an energy efficient way to manipulate DWs as an essential e...
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We quantify the probability per unit Euclidean-time of reversing the magnetization of a π-Bloch vector, which describes the Ferromagnetic Domain Walls of a Ferromagnetic Nanowire at finite-temperatures. Our approach, based on Langer’s Theory, treats the double sine-Gordon model that defines the π-Bloch vectors via a procedure of nonperturbative renormalization, and uses importance sampling meth...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2012
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.3672841