期刊
NANOMATERIALS
卷 11, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/nano11010194
关键词
skyrmions; friedel oscillations; density functional theory; magnetism; scanning tunneling microscopy; scattering
类别
资金
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [681405 DYNASORE]
Magnetic skyrmions are spin-swirling solitonic defects with potential applications in information technology. Their presence triggers scattering and Friedel oscillations, affecting interactions with surrounding defects. Parameters such as scattering potential and phase shift can help predict the behavior of skyrmions.
Magnetic skyrmions are spin swirling solitonic defects that can play a major role in information technology. Their future in applications and devices hinges on their efficient manipulation and detection. Here, we explore from ab-initio their nature as magnetic inhomongeities in an otherwise unperturbed magnetic material, Fe layer covered by a thin Pd film and deposited on top of Ir(111) surface. The presence of skyrmions triggers scattering processes, from which Friedel oscillations emerge. The latter mediate interactions among skyrmions or between skyrmions and other potential surrounding defects. In contrast to their wavelengths, the amplitude of the oscillations depends strongly on the size of the skyrmion. The analogy with the scattering-off atomic defects enables the assignment of an effective scattering potential and a phase shift to the skyrmionic particles, which can be useful to predict their behavior on the basis of simple scattering frameworks. The induced charge ripples can be utilized for a noninvasive all-electrical detection of skyrmions located on a surface or even if buried a few nanometers away from the detecting electrode.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据