Complex magnetic phase in submonolayer Fe stripes on Pt(997)
Complex magnetic phase in submonolayer Fe stripes on Pt(997)
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DOI：
10.1103/physrevb.79.104430
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发表时间：
2009-03-01
影响因子：
3.7
通讯作者：
Kern, K.
中科院分区：
文献类型：
--
作者：
Honolka, J.;Lee, T. Y.;Kern, K.
Correlations between magnetism and morphology of iron nanostructures of monatomic height on Pt(997) substrates are studied using x-ray magnetic circular dichroism as well as scanning tunneling microscopy and helium scattering. A drastic collapse of the average magnetization by more than a factor of 4 is observed when increasing the iron coverage from 0.1 to 0.2 ML. This effect goes along with a softening of the magnetic anisotropy energy and a gradual reorientation of the magnetic easy axis from in plane to out of plane. The experimental findings together with electronic density-functional calculations suggest the formation of a complex magnetic phase in corrugated rim regions of Fe islands, leading to both ferromagnetic and antiferromagnetic exchange couplings of Fe moments depending on their various local bonding configurations.
