Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
复制标题
DOI：
10.1088/0022-3727/44/39/392001
复制
发表时间：
2011-10-05
影响因子：
3.4
通讯作者：
Roessler, U. K.
中科院分区：
文献类型：
--
作者：
Kiselev, N. S.;Bogdanov, A. N.;Roessler, U. K.
二十多年前，人们预测纳米尺度的轴对称磁弦状物体（手征涡旋或skyrmions）存在于一大群非中心对称晶体中。最近，这些磁性纹理已被直接观察到在立方helimagnets和磁性金属单层的纳米层。针对具有内禀和诱导手征的磁性材料，发展了薄磁层中手征Skyrmions的微磁理论。这种颗粒状的、稳定的微磁性物体可以存在于包括零场在内的宽范围的外加磁场中。手征Skyrmions可以作为一种新型的高度移动的纳米级数据载体。
Axisymmetric magnetic string-like objects of nanometre sizes (chiral vortices or skyrmions) have been predicted to exist in a large group of noncentrosymmetric crystals more than two decades ago. Recently, these magnetic textures have been directly observed in nanolayers of cubic helimagnets and monolayers of magnetic metals. We develop a micromagnetic theory of chiral skyrmions in thin magnetic layers for magnetic materials with intrinsic and induced chirality. Such particle-like and stable micromagnetic objects can exist in broad ranges of applied magnetic fields including zero field. Chiral skyrmions can be used as a new type of highly mobile nanoscale data carriers.