Voltage Controlled Magnetic Skyrmion Motion for Racetrack Memory.
Voltage Controlled Magnetic Skyrmion Motion for Racetrack Memory.
复制标题
用于赛道存储器的压控磁斯格明子运动
DOI：
10.1038/srep23164
复制
发表时间：
2016-03-15
影响因子：
4.6
通讯作者：
Zhao W
中科院分区：
文献类型：
--
作者：
Kang W;Huang Y;Zheng C;Lv W;Lei N;Zhang Y;Zhang X;Zhou Y;Zhao W
磁skyrion是一种涡流状的拓扑稳定的自旋结构，具有稳定性、体积小和极低的驱动电流密度，是未来纳米电子学的信息载体。skyrmion最有前途的应用之一是建立赛道存储器（RM）。与基于域壁的RM （DW-RM）相比，基于skyrmion的RM （Sky-RM）在能量、密度和速度方面具有相当大的优势。迄今为止，人们对粒子的成核/湮灭、运动和探测等基本行为进行了深入的研究。然而，一个不可或缺的功能，即。在使用skyrmion进行RM之前，钉住/脱钉skyrmion仍然是一个悬而未决的问题。此外，目前的研究主要集中在物理方面的研究，而电气设计和评价方面的研究还很欠缺。在这项工作中，我们的目标是促进Sky-RM从基础物理到现实电子学的发展。首先，我们利用压控磁各向异性（VCMA）效应研究了skyrmion在纳米轨道上的钉钉/脱钉特性。然后，我们提出了一个紧凑的模型和设计框架，用于Sky-RM的电气评估。该工作完成了Sky-RM的基本存储功能，填补了物理学家和电子工程师之间的技术空白，为Sky-RM的发展迈出了重要的一步。
Magnetic skyrmion, vortex-like swirling topologically stable spin configurations, is appealing as information carrier for future nanoelectronics, owing to the stability, small size and extremely low driving current density. One of the most promising applications of skyrmion is to build racetrack memory (RM). Compared to domain wall-based RM (DW-RM), skyrmion-based RM (Sky-RM) possesses quite a few benefits in terms of energy, density and speedetc. Until now, the fundamental behaviors, including nucleation/annihilation, motion and detection of skyrmion have been intensively investigated. However, one indispensable function,i.e., pinning/depinning of skyrmion still remains an open question and has to be addressed before applying skyrmion for RM. Furthermore, Current research mainly focuses on physical investigations, whereas the electrical design and evaluation are still lacking. In this work, we aim to promote the development of Sky-RM from fundamental physics to realistic electronics. First, we investigate the pinning/depinning characteristics of skyrmion in a nanotrack with the voltage-controlled magnetic anisotropy (VCMA) effect. Then, we propose a compact model and design framework of Sky-RM for electrical evaluation. This work completes the elementary memory functionality of Sky-RM and fills the technical gap between the physicists and electronic engineers, making a significant step forward for the development of Sky-RM.