Interface induced enhancement of inverse spin Hall voltage in NiFe/Pt bilayers capped by MgO layer
Interface induced enhancement of inverse spin Hall voltage in NiFe/Pt bilayers capped by MgO layer
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MgO 层覆盖的 NiFe/Pt 双层中反自旋霍尔电压的界面诱导增强
DOI:
10.1088/1361-648x/ab172a
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发表时间:
2019-04
期刊:
影响因子:
--
通讯作者:
Zhan X Z
中科院分区:
文献类型:
--
作者:
Zhu T;Chang F F;Zhan X Z
In ferromagnet/heavy metal bilayers, a spin current can be generated under the ferromagnetic resonance (FMR) condition, and then converted into a charge current in adjacent nonmagnetic metals through inverse spin Hall effect (ISHE). Here, we report an experimental observation of interface induced ISHE enhancement in NiFe/Pt bilayers covered by MgO layer. Compared to bare NiFe/Pt bilayers, Pt/MgO interface induces an enhancement of the spin-charge conversion in the NiFe/Pt/MgO trilayers with very thin Pt layers, in agreement with the corresponding trend of Gilbert damping enhancement. When the thickness of Pt is below 1.6 nm, the ISHE induced charge current has about 70% enhancement. These results open a new pathway to improve the spin-charge conversion efficiency by interface engineering.
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DOI:
10.1016/b978-0-12-398374-9.09989-7
发表时间:
2013
期刊:
Experimental Methods in The Physical Sciences
影响因子:
--
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DOI:
10.17877/de290r-11474
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2001
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--
影响因子:
--
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