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相关论文: Detection of domain wall eigenfrequency in infinit…

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Domain walls (DWs) in magnetic nanowires are promising candidates for a variety of applications including Boolean/unconventional logic, memories, in-memory computing as well as magnetic sensors and biomagnetic implementations. They show…

介观与纳米尺度物理 · 物理学 2023-05-30 G. Venkat , D. A. Allwood , T. J. Hayward

We carry out large-scale micromagnetic simulations which demonstrate that due to topological constraints, internal domain walls (Bloch lines) within extended domain walls are more robust than domain walls in nanowires. Thus, the possibility…

材料科学 · 物理学 2015-09-17 Touko Herranen , Lasse Laurson

Strongly out-of-equilibrium regimes in magnetic nanostructures exhibit novel properties, linked to the nonlinear nature of magnetization dynamics, which are of great fundamental and practical interest. Here, we demonstrate that field-driven…

We discuss time-quantified Monte-Carlo simulations on classical spin chains with uniaxial anisotropy in relation to static calculations. Depending on the thickness of domain walls, controlled by the relative strength of the exchange and…

统计力学 · 物理学 2015-03-19 Orlando V. Billoni , Vivien Pianet , Danilo Pescia , Alessandro Vindigni

We present an eigenvalue-based approach for studying the magnetization dynamics in magnetic nanostructures driven by spintronic excitations, such as spin transfer torque and spin orbit torque. The approach represents the system dynamics in…

应用物理 · 物理学 2022-03-25 Zhuonan Lin , Iana Volvach , Xueyang Wang , Vitaliy Lomakin

The dynamics of magnetic domain wall motion in the FeNi layer of a FeNi/Al2O3/Co trilayer has been investigated by a combination of x-ray magnetic circular dichroism, photoelectron emission microscopy, and a stroboscopic pump-probe…

Dynamics of magnetization domain walls (DWs) in thin ferromagnetic nanotubes subject to longitudinal external fields is addressed analytically in the regimes of strong and weak penalization. Explicit functional forms of the DW profiles and…

材料科学 · 物理学 2014-04-14 Arseni Goussev , JM Robbins , Valeriy Slastikov

In a two or three dimensional ferromagnetic XXZ model, a low energy excitation mode above a magnetic domain wall is gapless, whereas all of the usual spin wave excitations moving around the whole crystal are gapful. Although this surprising…

介观与纳米尺度物理 · 物理学 2007-05-23 Tohru Koma , Masanori Yamanaka

We theoretically study domain wall oscillations upon the injection of a dc current through a geometrically constrained wire with perpendicular magnetic anisotropy. The oscillation frequency spectrum can be tuned by the injected current…

介观与纳米尺度物理 · 物理学 2015-05-14 A. Bisig , O. Boulle , M. Klaui

Domain wall propagation has been measured in continuous, weakly disordered, quasi-two-dimensional, Ising-like magnetic layers that are subject to spatially periodic domain wall pinning potentials. The potentials are generated…

介观与纳米尺度物理 · 物理学 2013-04-30 P. J. Metaxas , P. -J. Zermatten , R. L. Novak , S. Rohart , J. -P. Jamet , R. Weil , J. Ferré , A. Mougin , R. L. Stamps , G. Gaudin , V. Baltz , B. Rodmacq

We report on experimental measurements of the growth of regular domains evolving from an irregular pattern in electroconvection. The late-time growth of the domains is consistent with the size of the domains scaling as $t^n$. We use two…

软凝聚态物质 · 物理学 2009-10-31 Lynne Purvis , Michael Dennin

Planar magnetic nanoelements, either single- or multi-layered, are exploited in a variety of current or forthcoming spintronic and/or ICT devices, such as read heads, magnetic memory cells, spin-torque nano-oscillators, nanomagnetic logic…

应用物理 · 物理学 2019-08-30 Giovanni Carlotti

Modifications of spatial distributions of dynamic magnetization corresponding to spinwave eigenmodes of magnetic squares subjected to a strong microwave excitation field have been studied experimentally and theoretically. We show that an…

斑图形成与孤子 · 物理学 2009-11-13 Mikhail Kostylev , Vladislav E. Demidov , Ulf-Hendrik Hansen , Sergej O. Demokritov

Magnetic friction is a form of non-contact friction arising from the dissipation of energy in a magnet due to spin reorientation in a magnetic field. In this paper we study magnetic friction in the context of micromagnetics, using our…

介观与纳米尺度物理 · 物理学 2019-09-04 Ilari Rissanen , Lasse Laurson

A theory for the spin wave eigenmodes of a Dzyaloshinskii domain wall is presented. These walls are N\'eel-type domain walls that can appear in perpendicularly-magnetized ultrathin ferromagnets in the presence of a sizeable…

材料科学 · 物理学 2015-07-07 Pablo Borys , Felipe Garcia-Sanchez , Joo-Von Kim , Robert L. Stamps

We found by micromagnetic simulations that the motion of a transverse wall (TW) type domain wall in magnetic thin-film nanostripes can be manipulated via interaction with spin waves (SWs) propagating through the TW. The velocity of the TW…

Electronic transport through thin and laterally constrained domain walls in ferromagnetic nanojunctions is analyzed theoretically. The description is formulated in the basis of scattering states. The resistance of the domain wall is…

材料科学 · 物理学 2009-11-10 V. K. Dugaev , J. Berakdar , J. Barnas

The spatial profiles and the dissipation characteristics of spin-wave quasi-eigenmodes are investigated in small magnetic Ni$_{81}$Fe$_{19}$ ring structures using Brillouin light scattering microscopy. It is found, that the decay constant…

材料科学 · 物理学 2009-11-13 H. Schultheiss , C. W. Sandweg , B. Obry , S. J. Hermsdoerfer , S. Schaefer , B. Leven , B. Hillebrands

We show that nano-scale variations of the order parameter in strongly-correlated systems can induce local spatial regions such as domain walls that exhibit electronic properties representative of a different, but nearby, part of the phase…

强关联电子 · 物理学 2009-11-10 M. S. Rzchowski , Robert Joynt

We demonstrate a technique that enables ferromagnetic resonance (FMR) measurements of the normal modes for magnetic excitations in individual nanoscale ferromagnets, smaller in volume by a factor of 1000 than can be probed by other methods.…

材料科学 · 物理学 2009-11-11 J. C. Sankey , P. M. Braganca , A. G. F. Garcia , I. N. Krivorotov , R. A. Buhrman , D. C. Ralph