Logic Operations Based on Magnetic-Vortex-State Networks
Logic Operations Based on Magnetic-Vortex-State Networks
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DOI：
10.1021/nn3000143
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发表时间：
2012-05-01
期刊：
影响因子：
17.1
通讯作者：
Kim, Sang-Koog
中科院分区：
文献类型：
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作者：
Jung, Hyunsung;Choi, Youn-Seok;Kim, Sang-Koog
基于耦合磁涡旋的逻辑操作进行了实验验证。我们利用了一个简单的链结构，包括三个物理上分离，但偶极耦合的涡旋状态坡莫合金磁盘以及两个电极的逻辑输入的应用程序。我们直接监测的涡旋旋转在中间的磁盘，作为逻辑输出，通过时间分辨的全场软X射线显微镜测量。通过操纵两个端盘的相对偏振配置，两种不同的逻辑操作是可编程的：用于平行偏振的XOR操作和用于反平行偏振的OR操作。这一工作为基于涡态网络中耦合涡旋-回转动力学的新型可编程逻辑门的实现奠定了基础。其优点如下：通过共振涡旋激励实现低功率输入信号，通过选择低阻尼材料实现信号传输过程中的低能量耗散，以及简单的图案阵列结构。
Logic operations based on coupled magnetic vortices were experimentally demonstrated. We utilized a simple chain structure consisting of three physically separated but dipolar-coupled vortex-state Permalloy disks as well as two electrodes for application of the logical inputs. We directly monitored the vortex gyrations in the middle disk, as the logical output, by time-resolved full-field soft X-ray microscopy measurements. By manipulating the relative polarization configurations of both end disks, two different logic operations are programmable: the XOR operation for the parallel polarization and the OR operation for the antiparallel polarization. This work paves the way for new-type programmable logic gates based on the coupled vortex-gyration dynamics achievable in vortex-state networks. The advantages are as follows: a low-power input signal by means of resonant vortex excitation, low-energy dissipation during signal transportation by selection of low-damping materials, and a simple patterned-array structure.