Ferromagnetism in Pd thin films induced by quantum well states

被引：47
|
作者：
Hong, Soon Cheol [1 ]
Lee, Jae Il
Wu, Ruqian
机构：
[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea
[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA
[3] Inha Univ, Dept Phys, Inchon 420751, South Korea
[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.75.172402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We performed the first-principles density-functional calculations to investigate the magnetism of palladium films up to 21 ML (monolayer) thick, employing the highly precise full-potential linearized augmented plane-wave method. The ferromagnetic state is stable in Pd films only with particular thicknesses, 1, 4, 9, and 15 ML. While the ferromagnetism of Pd monolayer is due to band narrowing, magnetization in 4, 9, and 15 ML of Pd is obviously triggered by quantum well states, rather than by surface termination. We predicted sizable x-ray magnetic circular dichroism spectra of magnetic Pd films for experimental verifications.
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页数：4
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