Towards 3-dimensional magnetic data storage
Towards 3-dimensional magnetic data storage
复制标题
迈向 3 维磁性数据存储
DOI：
10.1109/iceaa.2011.6046475
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
R. Cowburn
中科院分区：
文献类型：
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作者：
R. Cowburn
磁性薄膜中的拓扑孤子最近被认为是三维磁性数据存储的候选者。数据位由反铁磁序参数中是否存在孤子来表示;然后施加的磁场或电流可以将孤子从一层传播到下一层，允许数据被转移到多层的体积中。以前，手征孤子已经被讨论为理想的数据载体，因为它们的手征性质允许它们被旋转磁场同步移位。在这次演讲中，我描述了一种非手性孤子，它也可以存在于这样的纳米结构系统中，并且可以通过线性振荡磁场从一层传播到另一层。我还展示了最新的实验进展，证明磁多层膜中的孤子运动。
Topological solitons within multilayer stacks of magnetic thin films have recently been proposed as a candidate for 3-dimensional magnetic data storage. Data bits are represented by the presence or absence of solitons in the antiferromagnetic order parameter; an applied magnetic field or electrical current can then propagate the solitons from one layer to the next, allowing data to be shifted into the volume of the multilayer. Previously, chiral solitons have been discussed as the ideal data carrier since their chiral nature allows them to be shifted synchronously by a rotating magnetic field. In this talk I describe an achiral soliton which can also exist in such nanostructured systems and which can be propagated from layer to layer by a linear oscillating magnetic field. I also show latest experimental progress towards demonstrating soliton motion in magnetic multilayers.