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相关论文: Asymmetric depinning of chiral domain walls in fer…

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The resistivity of disordered metallic layer sandwiched by two ferromagnetic layers at low-temperature is investigated theoretically. It is shown that the magnetic field acting at the interface does not affect the classical Boltzmann…

介观与纳米尺度物理 · 物理学 2015-06-25 Gen Tatara , Hidetoshi Fukuyama

The switching characteristics of ferroelectrics and multiferroics are influenced by the interaction of topological defects with domain-walls. We report on the pinning of polarization due to antiphase boundaries in thin films of the…

材料科学 · 物理学 2024-12-04 Guodong Ren , Pravan Omprakash , Xin Li , Yu Yun , Arashdeep S. Thind , Xiaoshan Xu , Rohan Mishra

In (S/F) hybrids the suppression of superconductivity by the exchange field h_ex of the ferromagnet can be partially lifted when different directions of h_ex are sampled simultaneously by the Cooper pair. In F/S/F trilayer geometries where…

超导电性 · 物理学 2009-11-10 A. Yu. Rusanov , M. Hesselberth , J. Aarts , A. I. Buzdin

Interfacial Dzyaloshinkii-Moriya interaction defines a rotational sense for the magnetization of two-dimensional films making it responsible for the formation of chiral magnetic structures like spin-spirals and skyrmions in those films.…

介观与纳米尺度物理 · 物理学 2019-07-03 Elena Y. Vedmedenko , Jon A. Arregi , Patricia Riego , Andreas Berger

An analytical model for the domain wall structure in ultrathin films with perpendicular easy axis and interfacial Dzyaloshinskii-Moriya interaction, submitted to an arbitrary in-plane magnetic field, is presented. Its solution is simplified…

介观与纳米尺度物理 · 物理学 2021-04-28 Pierre Géhanne , André Thiaville , Stanislas Rohart , Vincent Jeudy

We study bubble domain wall dynamics using micromagnetic simulations in perpendicularly magnetized ultra-thin films with disorder and Dzyaloshinskii-Moriya interaction. Disorder is incorporated into the material as grains with randomly…

介观与纳米尺度物理 · 物理学 2018-04-04 Bhaskarjyoti Sarma , Felipe Garcia-Sanchez , S. Ali Nasseri , Arianna Casiraghi , Gianfranco Durin

We have investigated numerically the field-driven propagation of perpendicularly magnetized ferromagnetic layers. It was then compared to the historical one-dimensional domain wall (DW) propagation model widely used in spintronics studies…

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

Spin waves in antiferromagnets are linearly or circularly polarized. Depending on the polarization, traversing spin waves alter the staggered field in a qualitatively different way. We calculate the drift velocity of a moving domain wall as…

介观与纳米尺度物理 · 物理学 2014-04-11 Erlend Grytli Tveten , Alireza Qaiumzadeh , Arne Brataas

Considerable research interest has been attracted to noncollinear magnetic structures for their intriguing physics and promising applications. In this work, based on relativistic density functional theory, we reveal the interesting magnetic…

材料科学 · 物理学 2022-11-14 Na Wang , Jun Chen , Ning Ding , Huimin Zhang , Shuai Dong , Shan-Shan Wang

The domain structure in in-plane magnetized Fe/Ni/W(110) films is investigated using spin-polarized low-energy electron microscopy. A novel transition of the domain wall shape from a zigzag-like pattern to straight is observed as a function…

介观与纳米尺度物理 · 物理学 2021-08-26 Gong Chen , MacCallum Robertson , Heeyoung Kwon , Changyeon Won , Andreas K. Schmid , Kai Liu

We show that the interaction of the magnetic subsystem of a curved magnet with the magnet curvature results in coupling of a topologically nontrivial magnetization pattern and topology of the object. The mechanism of this coupling is…

介观与纳米尺度物理 · 物理学 2015-05-20 Oleksandr V. Pylypovskyi , Volodymyr P. Kravchuk , Denis D. Sheka , Denys Makarov , Oliver G. Schmidt , Yuri Gaididei

We investigate magnetic domain walls in a single fcc Mn layer on Re(0001) employing spin-polarized STM, atom manipulation, and spin dynamics simulations. The low symmetry of the row-wise antiferromagnetic (1Q) state leads to a new type of…

介观与纳米尺度物理 · 物理学 2021-06-16 Jonas Spethmann , Martin Grünebohm , Roland Wiesendanger , Kirsten von Bergmann , André Kubetzka

We analyse the impact of growth conditions on asymmetric magnetic bubble expansion under in-plane field in ultrathin Pt / Co / Pt films. Specifically, using sputter deposition we vary the Ar pressure during the growth of the top Pt layer.…

Magnetic topology and its associated emergent phenomena are central to realizing intriguing quantum states and spintronics functionalities. Designing spin textures to achieve strong and distinct electrical responses remains a significant…

A-type antiferromagnetism, with an in-plane ferromagnetic order and the interlayer antiferromagnetic coupling, owns inborn advantages for electrical manipulations but is naturally rare in real materials except in those artificial…

材料科学 · 物理学 2023-04-18 Xinyu Yang , Ning Ding , Jun Chen , Ziwen Wang , Ming An , Shuai Dong

We study theoretically the dynamics of composite domain walls (DW) in multiferroic material GdFeO${}_3$ driven by magnetic field $H$. Two antiferromagnetic orders of Fe and Gd spins interact Gd-ion displacement in this system with coupling…

介观与纳米尺度物理 · 物理学 2020-12-29 Koji Kawahara , Hirokazu Tsunetsugu

Using spin-polarized low-energy electron microscopy to study magnetization in epitaxial layered systems, we found that the area vs perimeter relationship of magnetic domains in the top Fe layers of Fe/NiO/Fe(100) structures follows a…

材料科学 · 物理学 2008-01-08 N. Rougemaille , M. Portalupi , A. Brambilla , P. Biagioni , A. Lanzara , M. Finazzi , A. K. Schmid , L. Duò

We present a simple atomistic model for the description of noncollinear coupling in magnetic multilayers with hybrid spacer layers made of Ru alloyed to ferromagnetic atoms such as Fe. In contrast to previous analytical and micromagnetic…

Chiral magnetism, wherein there is a preferred sense of rotation of the magnetization, has become a key aspect for future spintronic applications. It determines the chiral nature of magnetic textures, such as skyrmions, domain walls or spin…