arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1312.4342cond-mat.mes-hall
收藏

全自旋应用中的拓扑保护磁位阻

Topologically Protected Magnetic Helix for All-Spin-Based Applications

E. Vedmedenko, D. Altwein

摘要:

近年来,出现了一个没有任何电荷流动的全自旋器件领域。这一科学方向的最终目标是实现像现代电子学中那样的全谱自旋网络。到目前为止,这些网络不可或缺的能量储存元件的概念还很缺乏。分析的大小相关的性质的磁链耦合通过交换或远程偶极或Ruderman-Kittel-Kasuya-Yosida相互作用,我们发现了一个特别简单的法律:磁配置对应于螺旋与整数倍的扭曲,这是相称的链的长度,是能量稳定的。这一发现得到了模拟和实验基准模型的支持,与研究[J. Appl. Phys. \textbf{111},07 E116(2012)]一致,该研究表明边界可以在拓扑上稳定否则不稳定的结构。在此基础上,提出了一种能量存储元件。

英文摘要:

The recent years have witnessed an emergence of the field of all-spin-based devices without any flow of charge. An ultimate goal of this scientific direction is the realization of full spectrum of spin-based networks like in modern electronics. The concepts of energy storing elements, indispensable for those networks, are so far lacking. Analyzing analytically the size dependent properties of magnetic chains that are coupled via either exchange or long-range dipolar or Ruderman-Kittel-Kasuya-Yosida interactions, we discover a particularly simple law: magnetic configurations corresponding to helices with integer number of twists, that are commensurate with the chain's length, are energetically stable. This finding, supported by simulations and an experimentally benchmarked model, agrees with the study [J. Appl. Phys. \textbf{111}, 07E116 (2012)] showing that boundaries can topologically stabilize structures that are not stable otherwise. On that basis an energy storing element is proposed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑