侧自旋阀的软X射线显微成像
Imaging of lateral spin valves with soft X-ray microscopy
摘要：
我们研究了钴/铜横向自旋阀的高分辨率透射软X射线显微镜与磁衬度，利用X射线磁性圆二色性（XMCD）。在Cu L $_3$吸收边处没有观察到磁性XMCD对比度，其应该直接成像Cu中的自旋积累。虽然电传输测量在一个非本地的几何形状清楚地检测到在铜的自旋积累，这保持不变，在照射过程中与圆偏振X射线在Co和Cu L $_3$的吸收边缘。
英文摘要：
We investigated Co/Cu lateral spin valves by means of high-resolution transmission soft x-ray microscopy with magnetic contrast that utilizes x-ray magnetic circular dichroism (XMCD). No magnetic XMCD contrast was observed at the Cu L$_3$ absorption edge, which should directly image the spin accumulation in Cu. Although electrical transport measurements in a non-local geometry clearly detected the spin accumulation in Cu, which remained unchanged during illumination with circular polarized x-rays at the Co and Cu L$_3$ absorption edges.
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