Exploration of new spin functionalities in magnetic/non-magnetic heterostructures

2014 Fiscal Year Final Research Report

• Project/Area Number: 25600069
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied materials
• Research Institution: Tohoku University
• Principal Investigator: NITTA Junsaku 東北大学, 工学(系)研究科(研究院), 教授 (00393778)
• Co-Investigator(Renkei-kenkyūsha): KOHDA Makoto 東北大学, 大学院工学研究科, 准教授 (00420000)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: スピン軌道相互作用 / ラッシュバ効果 / スピンホール効果 / 電界制御

Outline of Final Research Achievements

To clarify the mechnisim of magnetization reversal, we made Pt/Co/Pt structures with inversion symmetry and and AlO/Co/Pt structures with inversion asymmetry. In Pt/Co/Pt structures, we succeeded in evaluating conversion relation between current and magnetic field induced by spin Hall effect. We found that both Rashba and spin Hall effects coexist in AlO/Co/Pt structures. The Rashba effect is dominant with increasing Co thickness while the spin Hall effect is getting larger with increasing Pt thickness.

Free Research Field

スピントロニクス