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相关论文: Tunable chiral spin texture in magnetic domain-wal…

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Dynamics and textures of magnetic domain walls (DWs) may largely alter the electronic behaviors in a Weyl semimetal system via emergent gauge fields. However, very little is known about even the basic properties of these domain walls in…

强关联电子 · 物理学 2021-06-01 Bochao Xu , Jacob Franklin , Hung-Yu Yang , Fazel Tafti , Ilya Sochnikov

Magnetic domain walls are pinned strongly by abrupt changes in magnetic anisotropy. When driven into oscillation by a spin-polarized current, locally pinned domain walls can be exploited as tunable sources of short-wavelength spin waves.…

介观与纳米尺度物理 · 物理学 2018-08-29 Pavel Baláž , Sampo J. Hämäläinen , Sebastiaan van Dijken

Interface physics in oxide heterostructures is pivotal in material's science. Domain walls (DWs) in ferroic systems are examples of naturally occurring interfaces, where order parameter of neighboring domains is modified and emerging…

We theoretically study the equilibrium and dynamic properties of nanoscale magnetic tunnel junctions (MTJs) and magnetic wires, in which an electric field controls the magnetic anisotropy through spin-orbit coupling. By performing…

介观与纳米尺度物理 · 物理学 2015-06-17 Pramey Upadhyaya , Ritika Dusad , Silas Hoffman , Yaroslav Tserkovnyak , Juan G. Alzate , Pedram Khalili Amiri , Kang L. Wang

Electrons which are slowly moving through chiral magnetic textures can effectively be described as if they where influenced by electromagnetic fields emerging from the real-space topology. This adiabatic viewpoint has been very successful…

材料科学 · 物理学 2018-10-23 Fabian R. Lux , Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

Based on the previous works (arXiv:1202.5375 and 1402.1346), we investigate the localization of the fields on the dynamical domain wall, where the four dimensional FRW universe is realized on the domain wall in the five dimensional…

高能物理 - 理论 · 物理学 2016-02-17 Yuta Toyozato , Masafumi Higuchi , Shin'ichi Nojiri

The nonreciprocal propagation of spin waves (SWs) offers opportunities for developing novel functional magnonic logic devices, where controllability is crucial for magnetic signal processing. Domain walls act as natural waveguides due to…

材料科学 · 物理学 2025-07-30 Tingting Liu , Shuhong Li , Yunlong Liu , Shuchao Qin , Yang Liu , Wenjun Wang , Minghui Qin

Non-collinear spin textures in ferromagnetic ultrathin films are attracting a renewed interest fueled by possible fine engineering of several magnetic interactions, notably the interfacial Dzyaloshinskii-Moriya interaction. This allows the…

N\'eel magnetic domain walls that are stabilized by achiral energy terms instead of the usual Dzyaloshinskii-Moriya interaction will be bistable, with the two possible chiral forms being degenerate. Here we focus on the theoretical study of…

介观与纳米尺度物理 · 物理学 2023-09-14 Eloi Haltz , Kévin J. A. Franke , Christopher H. Marrows

The manipulation of magnetism with a gate voltage is expected to lead the way towards the realization of energy-efficient spintronics devices and high-performance magnetic memories. Exploiting magneto-ionic effects under micro-patterned…

The motion of transverse domain walls (DWs) in U-shaped ferromagnetic nanotube which owns two different geometric confinements were investigated by micromagnetic simulation. Driven by unidirectional magnetic fields, the chirality-dependent…

材料科学 · 物理学 2020-05-18 Zhenxuan He , Xinwei Dong

The dynamics of current-induced motion of a magnetic domain wall in a quasi-one-dimensional ferromagnet with both easy-axis and easy-plane anisotropy, is studied. We pay a special attention to the case of a sharp domain wall, and calculate…

材料科学 · 物理学 2009-11-11 V. K. Dugaev , V. R. Vieira , P. D. Sacramento , J. Barnas , M. A. N. Araujo , J. Berakdar

This work analyzes the propagation of a transverse domain wall (DW) motion under the action of an electric current along a nanowire (NW) with a curvature gradient. Our results evidence that the curvature gradient induces a chiral…

介观与纳米尺度物理 · 物理学 2023-08-21 G. H. R. Bittencourt , M. Castro , A. S. Nunez , D. Altbir , S. Allende , V. L. Carvalho-Santos

The growing demand for storage, due to big data applications, cannot be met by hard disk drives. Domain wall (DW) memory devices such as racetrack memory offer an alternative route to achieve high capacity storage. In DW memory, control of…

应用物理 · 物理学 2020-02-19 H. Mohammed , S. Al Risi , T. L. Jin3 J. Kosel , S. N. Piramanayagam , R. Sbiaa

The influence of the curvature on the dynamical properties of transversal domain walls in a thin antiferromagnetic wire is studied theoretically. Equations of motion for antiferromagnetic domain wall are obtained within the collective…

强关联电子 · 物理学 2022-02-16 Kostiantyn V. Yershov

We have studied the current-induced displacement of a domain wall (DW) in the permalloy (Py) layer of a Co/Cu/Py spin valve structure at zero and very small applied field. The displacement is in opposite direction for opposite dc currents,…

材料科学 · 物理学 2009-11-10 J. Grollier , P. Boulenc , V. Cros , A. Hamzic , A. Vaures , A. Fert , G. Faini

The interfacial Dzyaloshinskii-Moriya interaction (DMI) of a heavy metal (HM)/ferromagnetic (FM) metal heterostructure is vital to the current-induced domain wall motion (CIDWM) at an ultrahigh velocity. However, strong DMI also tilts the…

计算物理 · 物理学 2018-12-18 Maokang Shen , Yue Zhang , Wei Luo , Long You , Xiaofei Yang

We report the direct observation of the current-driven domain wall (DW) motion by magnetic force microscopy in a structured Co/Ni wire with perpendicular magnetic anisotropy. The wire has notches to define the DW position. It is…

Nanoscale self-localized topological spin textures, such as domain walls and skyrmions, are of interest for the fundamental physics of magnets and spintronics applications. Ferrimagnets (FiMs), in the region close to the angular momentum…

介观与纳米尺度物理 · 物理学 2024-10-29 R. V. Ovcharov , B. A. Ivanov , E. G. Galkina , J. Åkerman , R. S. Khymyn

It is well documented that subjecting perpendicular magnetic films which exhibit the interfacial Dzyaloshinskii-Moriya interaction (DMI) to an in-plane magnetic field results in a domain wall (DW) energy, $\sigma$, that is highly…

材料科学 · 物理学 2017-07-19 Price Pellegren , Derek Lau , Vincent Sokalski