Magnetic excitations of rare earth atoms and clusters on metallic surfaces.
Magnetic excitations of rare earth atoms and clusters on metallic surfaces.
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DOI：
10.1021/nl302250n
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发表时间：
2012-08
期刊：
影响因子：
10.8
通讯作者：
T. Schuh;T. Miyamachi;S. Gerstl;M. Geilhufe;M. Hoffmann;S. Ostanin;W. Hergert;A. Ernst;W. Wulfhekel
中科院分区：
文献类型：
--
作者：
T. Schuh;T. Miyamachi;S. Gerstl;M. Geilhufe;M. Hoffmann;S. Ostanin;W. Hergert;A. Ernst;W. Wulfhekel
用非弹性隧道谱研究了稀土Gd原子及其二聚体在Pt（111）和Cu（111）表面的磁各向异性和磁化动力学。自旋激发谱表明Gd的巨磁各向异性和激发态寿命几乎与支撑表面和团簇尺寸无关。结合理论计算，我们认为，所观察到的特征是由Gd原子和团簇中的4f电子的强局域化特性造成的。
Magnetic anisotropy and magnetization dynamics of rare earth Gd atoms and dimers on Pt(111) and Cu(111) were investigated with inelastic tunneling spectroscopy. The spin excitation spectra reveal that giant magnetic anisotropies and lifetimes of the excited states of Gd are nearly independent of the supporting surfaces and the cluster size. In combination with theoretical calculations, we argue that the observed features are caused by strongly localized character of 4f electrons in Gd atoms and clusters.