arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.5552cond-mat.mes-hallcond-mat.stat-mech
收藏

具有Dzyaloshinskiii-Moriya相互作用的磁性纳米盘中的涡旋态理论

Theory of vortex states in magnetic nanodisks with induced Dzyaloshinskii-Moriya interactions

A. B. Butenko, A. A. Leonov, A. N. Bogdanov, U. K. Rößler

摘要:

磁性纳米盘中的涡旋态本质上受到表面/界面诱导的Dzyaloshinskiii-Moriya相互作用的影响。在微磁学方法中,我们计算了作为磁场、纳米盘的材料和几何参数的函数的涡旋的平衡尺寸和形状。研究发现,Dzyaloshinskiii-Moriya耦合可以显著增加具有“右”手征的涡旋的尺寸,并抑制具有相反手征的涡旋。这允许形成同手性涡旋的螺旋系统作为存储应用的基本元件。

英文摘要:

Vortex states in magnetic nanodisks are essentially affected by surface/interface induced Dzyaloshinskii-Moriya interactions. Within a micromagnetic approach we calculate the equilibrium sizes and shape of the vortices as functions of magnetic field, the material and geometrical parameters of nanodisks. It was found that the Dzyaloshinskii-Moriya coupling can considerably increase sizes of vortices with "right" chirality and suppress vortices with opposite chirality. This allows to form a bistable system of homochiral vortices as a basic element for storage applications.

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。

↑