Co double-layer nanostructures on Pt(111) studied by spin-polarized scanning tunnelling microscopy
Co double-layer nanostructures on Pt(111) studied by spin-polarized scanning tunnelling microscopy
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自旋偏振扫描隧道显微镜研究 Pt(111) 上的 Co 双层纳米结构
DOI：
10.1088/0022-3727/40/5/s18
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
R. Wiesendanger
中科院分区：
文献类型：
--
作者：
F. Meier;K. von Bergmann;J. Wiebe;M. Bode;R. Wiesendanger
采用自旋分辨扫描隧道显微镜对Pt（11 11）上的Co双层纳米结构进行了测量。高分辨率光谱显示，由于Pt和Co之间的晶格不匹配引起的位错，电子结构高度不均匀。自旋极化测量允许磁态依赖于平面外磁化岛的确定。在外场存在的情况下，我们观察到两种不同类型的钴双层岛，它们表现出惊人的大矫顽力，这取决于它们的制备。
Spin-resolved scanning tunnelling microscopy measurements were performed for Co double-layer nanostructures on Pt(1 1 1). High-resolution spectroscopy shows that the electronic structure is highly inhomogeneous due to dislocations induced by the lattice mismatch between Pt and Co. Spin-polarized measurements allow a magnetic state dependent determination of out-of-plane magnetized islands. In the presence of external fields we have observed two different types of Co double-layer islands which exhibit a surprisingly large coercivity depending on their preparation.