Spin-dependent quantum interference from epitaxial MgO thin films on Fe(001)

被引：26
|
作者：
Wu, Y. Z. [1 ]
Schmid, A. K.
Qiu, Z. Q.
机构：
[1] Fudan Univ, Surface Phys Lab, Natl Key Lab, Shanghai 200433, Peoples R China
[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[3] Lawrence Berkeley Natl Lab, NCEM, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 21期
关键词：
D O I：
10.1103/PhysRevLett.97.217205
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Spin-dependent electron reflection from MgO thin films grown on Fe(001) was measured using spin-polarized low energy electron microscopy. The electron reflectivity exhibits quantum interference from which two MgO energy bands with Delta(1) symmetry were determined in experiment. We found that a bulklike MgO energy gap is fully established for MgO film thicker than 3 atomic monolayers and that the electron reflectivity from the MgO/Fe interface exhibits a spin-dependent amplitude and a spin-independent phase change.
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页数：4
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