Perpendicular spin orientation in ultrasmall Fe islands on W(110).
Perpendicular spin orientation in ultrasmall Fe islands on W(110).
复制标题
W(110) 上超小 Fe 岛的垂直自旋方向。
DOI：
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发表时间：
2001
影响因子：
8.6
通讯作者：
K. Meiwes
中科院分区：
文献类型：
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作者：
R. Röhlsberger;J. Bansmann;V. Senz;K. Jonas;A. Bettac;O. Leupold;R. Rüffer;E. Burkel;K. Meiwes
用同步辐射14.4keV共振的核共振散射方法研究了W(110)表面镀银Fe岛的磁性。当Fe覆盖度为theta=0.57时，形成了平均直径为2.0 nm、单层厚度较大的分离岛。在4.5K到300K的温度范围内测量了核衰变的时间谱，我们发现了垂直自旋取向的有力证据，这很可能是形状各向异性和岛上弹性应变相互作用的结果。
We have studied the magnetism of Ag-coated Fe islands on W(110) by nuclear resonant scattering of synchrotron radiation at the 14.4 keV resonance of (57)Fe. Separated islands with an average diameter of 2.0 nm and monolayer thickness are formed at a Fe coverage of theta = 0.57 bulk monolayers. Time spectra of the nuclear decay were measured in the temperature range from 4.5 to 300 K. We find strong evidence for perpendicular spin orientation, which most likely results from the interplay of shape anisotropy and elastic strain in the islands.