2016 Fiscal Year Final Research Report
Spin orbit torque in oxide hetero structures
| Project/Area Number |
15H05517
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | スピン軌道トルク / 酸化物ヘテロ構造 |
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| Outline of Final Research Achievements |
We investigate current-induced effective magnetic field Heff in ferromagnetic oxide heterostructures La0.67Sr0.33MnO3 (LSMO)/SrTiO3 by using the planar Hall effect. By applying in-plane current to LSMO films, in-plane Heff orthogonal to the current direction is exerted on magnetization. The Heff magnitude increases with increasing current magnitude, and the direction reverses when the applied current is switched to opposite sign. Assuming that a 6.5-u.c. insulating layer is created in the LSMO, the values of Heff observed in the heterostructures with three different LSMO thicknesses are almost scaled with current density, evaluated from the effective LSMO thickness excluding the insulating layer, suggesting that Heff is induced in the LSMO bulk.
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| Free Research Field |
スピントロニクス
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