| Budget Amount *help |
¥26,130,000 (Direct Cost: ¥20,100,000、Indirect Cost: ¥6,030,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
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| Outline of Final Research Achievements |
We performed spin-polarized STM and XAS/XMCD measurements for antiferromagnetic/ferromagnetic Mn/Fe thin film heterostructures grown on Cu(001). The purpose of this work was to elucidate microscopic origins of electronic and magnetic properties at the heterointerface. We observed the spin reorientation transition of the Fe layer in Mn/Fe thin film heterostructures from out-of-plane direction to in-plane direction with increasing the thickness of the Mn layer. Atomically-resolved STM observations in the process of the heterointerface formation revealed the structural transition from the disordered alloy to the ordered alloy at the heterointerface as the origin of the transition. Furthermore, with the help of atomic-scale observations of surface magnetic structures of the Mn layer by spin-polarized STM, we successfully demonstrated that the change in the easy magnetization direction of the Fe layer is originated from the magnetic coupling with the Mn layer at the heterointerface.
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