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Domain walls in a one-dimensional gapped easy-axis ferromagnet can exhibit Bloch oscillations in an applied magnetic field. We investigate how exchange couplings modify this behavior within an approximation based on noninteracting…

强关联电子 · 物理学 2012-03-15 Sergey Shinkevich , Olav F. Syljuåsen

Magnetic domain walls (DWs) in nanostructures are low-dimensional objects that separate regions with uniform magnetisation. Since they can have different shapes and widths, DWs are an exciting playground for fundamental research, and became…

介观与纳米尺度物理 · 物理学 2015-09-17 V. D. Nguyen , O. Fruchart , S. Pizzini , J. Vogel , J. -C. Toussaint , N. Rougemaille

We present a line-based model of transverse domain walls in thin magnetic strips, to study the effect of bulk disorder on the domain wall dynamics within the thermally activated creep regime. The creep velocity is found to exhibit a…

材料科学 · 物理学 2015-05-14 Lasse Laurson , Adil Mughal , Gianfranco Durin , Stefano Zapperi

We report a theoretical overview of the magnetic domain wall behavior under an electric current in infinitely-long nanotubes with azimuthal magnetization, combining the $1$D analytic model and micromagnetic simulations. We highlight effects…

介观与纳米尺度物理 · 物理学 2021-01-27 Jérôme Hurst , Arnaud De Riz , Staňo , Jean-Christophe Toussaint , Olivier Fruchart , Daria Gusakova

Electric control of multiple domain walls (DWs) motion is demonstrated by Pt/Co/Pt nanotracks with perpendicular magnetic anisotropy. Due to the weak microstructural disorders with small DW propagation field, the purely current-driven DW…

介观与纳米尺度物理 · 物理学 2015-05-19 Kab-Jin Kim , Jae-Chul Lee , Sang-Jun Yun , Gi-Hong Gim , Kang-Soo Lee , Sug-Bong Choe , Kyung-Ho Shin

We investigate how domain structure of the ferromagnet in superconductor-ferromagnet heterostructures may change their transport properties. We calculate the distribution of current in the superconductor induced by magnetic field of Bloch…

介观与纳米尺度物理 · 物理学 2007-05-23 I. S. Burmistrov , N. M. Chtchelkatchev

Ultrafast dynamics of antiferromagnetic materials is an appealing feature for novel spintronic devices. Several experiments have shown that both, the static states and the dynamical behavior of the antiferromagnetic order, are strictly…

介观与纳米尺度物理 · 物理学 2024-01-24 Luis Sanchez-Tejerina , Vito Puliafito , Pedram Khalili Amiri , Mario Carpentieri , Giovanni Finocchio

The geometry and morphology of magnetic domain walls (DWs) are closely related to their dynamics when driven by external forces. Under some reliable approximations DWs can be considered self-affine interfaces, so universal laws govern their…

无序系统与神经网络 · 物理学 2023-12-29 P. Domenichini , G. Pasquini , M. G. Capeluto

A multiple-time scaling analysis of the dissipative, transversely driven Landau-Lifshitz equation in presence of exchange, shape demagnetisation and week anisotropy fields is performed for a dynamic domain state. Stationary solutions of the…

patt-sol · 物理学 2008-02-03 Timm Plefka

Domains walls and topological defects in ferroelectric materials have emerged as a powerful new paradigm for functional electronic devices including memory and logic. Similarly, wall interactions and dynamics underpin a broad range of…

The propagation of a domain wall in a submicron ferromagnetic spin-valve stripe is investigated using giant magnetoresistance. A notch in the stripe efficiently traps an injected wall stopping the domain propagation. The authors show that…

材料科学 · 物理学 2008-04-02 J. Briones , F. Montaigne , Daniel Lacour , M. Hehn , M. J. Carey , J. R. Childress

We express dynamics of domain walls in ferromagnetic nanowires in terms of collective coordinates generalizing Thiele's steady-state results. For weak external perturbations the dynamics is dominated by a few soft modes. The general…

材料科学 · 物理学 2008-03-31 O. A. Tretiakov , D. Clarke , Gia-Wei Chern , Ya. B. Bazaliy , O. Tchernyshyov

We study the domain wall motion in a disordered weak ferromagnet, induced by injecting a spin current from a strong ferromagnet. Starting from the spin diffusion equation describing the spin accumulation in the weak ferromagnet, we…

介观与纳米尺度物理 · 物理学 2020-04-29 Faluke Aikebaier , Tero T. Heikkilä

Ultrathin ferromagnetic strips with high perpendicular anisotropy have been proposed for the development of memory devices where the information is coded in tiny domains separated by domain walls. The design of practical devices requires…

介观与纳米尺度物理 · 物理学 2017-09-21 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Eduardo Martinez

The magnetization dynamics equation predicts that a domain wall that changes structure should undergo a displacement by itself - automotion - due to the relaxation of the linear momentum that is associated with the wall structure. We…

介观与纳米尺度物理 · 物理学 2015-05-19 Jean-Yves Chauleau , Raphaël Weil , André Thiaville , Jacques Miltat

We investigate theoretically the motion of chiral N\'eel domain walls in perpendicularly magnetized systems driven by in-plane strain gradients. We show that such strain drives domain walls efficiently towards increasing tensile…

We study the dynamics of a ferromagnetic domain wall driven by an external magnetic field through a disordered medium. The avalanche-like motion of the domain walls between pinned configurations produces a noise known as the Barkhausen…

统计力学 · 物理学 2009-10-31 Stefano Zapperi , Pierre Cizeau , Gianfranco Durin , H. Eugene Stanley

In this paper, we elaborate analytical theory of domain wall dynamics close to the angular momentum compensation point based on non-linear dynamic equations derived from the effective Lagrangian of a ferrimagnet. Analysis of the precession…

材料科学 · 物理学 2021-03-09 A. K. Zvezdin , Z. V. Gareeva , K. A. Zvezdin

A domain wall in a ferromagnetic system will move under the action of an external magnetic field. Ultrathin Co layers sandwiched between Pt have been shown to be a suitable experimental realization of a weakly disordered 2D medium in which…

材料科学 · 物理学 2011-08-11 P. Politi , P. J. Metaxas , J. -P. Jamet , R. L. Stamps , J. Ferré

From the pioneering work of Winter [Phys. Rev. 124, 452 (1961)], a magnetic domain wall of Bloch type is known to host a special wall-bound spin-wave mode, which corresponds to spin-waves being channeled along the magnetic texture. Using…

介观与纳米尺度物理 · 物理学 2019-07-24 Yves Henry , Daniel Stoeffler , Joo-Von Kim , Matthieu Bailleul