Electrical detection of magnetic states in crossed nanowires using the topological Hall effect
Electrical detection of magnetic states in crossed nanowires using the topological Hall effect
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DOI：
10.1063/1.4979322
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发表时间：
2017-03
影响因子：
4
通讯作者：
K. Tanabe;Keisuke Yamada
中科院分区：
文献类型：
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作者：
K. Tanabe;Keisuke Yamada
我们利用微磁模拟研究了具有三种特征磁结构的交叉纳米线中由自旋手性引起的有效磁场的空间分布：辐射态、反涡旋态和类均匀态。我们的结果表明，与反常霍尔效应不同，拓扑霍尔效应(与自旋手性有关)同时依赖于极性和涡度。因此，测量拓扑霍尔效应可以同时检测交叉纳米线中的极性和涡度。该方法可能适合用作寻找下一代多值存储器的基本技术。
We used micromagnetic simulations to investigate the spatial distributions of the effective magnetic fields induced by spin chirality in crossed nanowires with three characteristic magnetic structures: a radiated-shape, an antivortex, and a uniform-like states. Our results indicate that, unlike the anomalous Hall effect, the topological Hall effect (which is related to the spin chirality) depends on both the polarity and the vorticity. Therefore, measuring the topological Hall effect can detect both the polarity and the vorticity simultaneously in crossed nanowires. This approach may be suitable for use as an elemental technique in the quest for a next-generation multi-value memory.