Spin Injection and Accumulation in the Planar NiFe–InSb–NiFe and NiFe–Cu–NiFe Spin Valves
- 作者: Nikulin Y.1,2, Khivintsev Y.1,2, Veselov A.1, Filimonov Y.1,2,3
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隶属关系:
- V.A. Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch)
- Saratov State University
- Yuri Gagarin State Technical University of Saratov
- 期: 卷 52, 编号 14 (2018)
- 页面: 1871-1874
- 栏目: Spin-Related Phenomena in Nanostructures
- URL: https://journals.rcsi.science/1063-7826/article/view/205097
- DOI: https://doi.org/10.1134/S1063782618140221
- ID: 205097
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Spin injection and accumulation have been studied for NiFe–InSb–NiFe and NiFe–Cu–NiFe planar spin valves with direct injection current I in nonlocal (NLSV) and local (LSV) measurement configurations at temperature 8–300 K. The value of the generated voltage U and the character of the dependence U(I) drastically changed for currents I greater some critical value Ic due to thermoelectric effects. For NLSV configuration and currents I<Ic the value of U is of 2–3 order of magnitude higher for NiFe–InSb–NiFe (U ≈ 1–3 mV at 300 K) structures in comparison with NiFe–Cu–NiFe (U ≈ 4–20 µV at 8 K). For LSV geometry electrical detection of spin current was observed only for NiFe–Cu–NiFe structure, where for I<Ic the magnetoresistance (MR) effect of the order 0.5% was detected. For currents I of 1.5–2% higher than Ic the MR of the order of 10–30% was observed for both NLSV and LSV configurations for studied structures.
作者简介
Y. Nikulin
V.A. Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch); Saratov State University
编辑信件的主要联系方式.
Email: yvnikulin@gmail.com
俄罗斯联邦, Saratov; Saratov
Y. Khivintsev
V.A. Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch); Saratov State University
Email: yvnikulin@gmail.com
俄罗斯联邦, Saratov; Saratov
A. Veselov
V.A. Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch)
Email: yvnikulin@gmail.com
俄罗斯联邦, Saratov
Y. Filimonov
V.A. Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch); Saratov State University; Yuri Gagarin State Technical University of Saratov
Email: yvnikulin@gmail.com
俄罗斯联邦, Saratov; Saratov; Saratov