Nonlocal magnon spin transport in NiFe2O4 thin films

被引：42

作者：

Shan, J. ^{[1
]}

Bougiatioti, P. ^{[2
]}

Liang, L. ^{[3
]}

Reiss, G. ^{[2
]}

Kuschel, T. ^{[1
]}

van Wees, B. J. ^{[1
]}

机构：

[1] Univ Groningen, Zernike Inst Adv Mat, Phys Nanodevices, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

[2] Univ Bielefeld, Dept Phys, Ctr Spinelect Mat & Devices, Univ Str 25, D-33615 Bielefeld, Germany

[3] Univ Groningen, Zernike Inst Adv Mat, Device Phys Complex Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 13期

关键词：

ROOM-TEMPERATURE; INSULATOR;

D O I：

10.1063/1.4979408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report magnon spin transport in nickel ferrite platinum (Pt)/(NiFe2O4, NFO) bilayer systems at room temperature. A nonlocal geometry is employed, where the magnons are excited by the spin Hall effect or by the Joule heating induced spin Seebeck effect at the Pt injector and detected at a certain distance away by the inverse spin Hall effect at the Pt detector. The dependence of the nonlocal magnon spin signals as a function of the magnetic field is closely related to the NFO magnetization behavior. In contrast, we observe that the magnetoresistance measured locally at the Pt injector does not show a clear relationship with the average NFO magnetization. We obtain a magnon spin relaxation length of 3.1 +/- 0.2 mu m in the investigated NFO samples. Published by AIP Publishing.

引用

页数：5

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