Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons

Shan J, Cornelissen LJ, Vlietstra N, Ben Youssef J;, Kuschel T, Duine RA, van Wees BJ (2016)
Physical Review B 94(17): 174437.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We studied the nonlocal transport behavior of both electrically and thermally excited magnons in yttrium iron garnet (YIG) as a function of its thickness. For electrically injected magnons, the nonlocal signals decrease monotonically as the YIG thickness increases. For the nonlocal behavior of the thermally generated magnons, or the nonlocal spin Seebeck effect (SSE), we observed a sign reversal which occurs at a certain heater-detector distance, and it is influenced by both the opacity of the YIG/heater interface and the YIG thickness. Our nonlocal SSE results can be qualitatively explained by the bulk-driven SSE mechanism together with the magnon diffusion model. Using a two-dimensional finite element model (2D-FEM), we estimated the bulk spin Seebeck coefficient of YIG at room temperature. The quantitative disagreement between the experimental and modeled results indicates more complex processes going on in addition to magnon diffusion and relaxation, especially close to the contacts.
Erscheinungsjahr
Zeitschriftentitel
Physical Review B
Band
94
Zeitschriftennummer
17
Artikelnummer
174437
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Shan J, Cornelissen LJ, Vlietstra N, et al. Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons. Physical Review B. 2016;94(17): 174437.
Shan, J., Cornelissen, L. J., Vlietstra, N., Ben Youssef, J. ;, Kuschel, T., Duine, R. A., & van Wees, B. J. (2016). Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons. Physical Review B, 94(17), 174437. doi:10.1103/PhysRevB.94.174437
Shan, J., Cornelissen, L. J., Vlietstra, N., Ben Youssef, J. ;, Kuschel, T., Duine, R. A., and van Wees, B. J. (2016). Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons. Physical Review B 94:174437.
Shan, J., et al., 2016. Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons. Physical Review B, 94(17): 174437.
J. Shan, et al., “Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons”, Physical Review B, vol. 94, 2016, : 174437.
Shan, J., Cornelissen, L.J., Vlietstra, N., Ben Youssef, J.;, Kuschel, T., Duine, R.A., van Wees, B.J.: Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons. Physical Review B. 94, : 174437 (2016).
Shan, Juan, Cornelissen, Ludo J., Vlietstra, Nynke, Ben Youssef, Jama;, Kuschel, Timo, Duine, Rembert A., and van Wees, Bart J. “Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons”. Physical Review B 94.17 (2016): 174437.
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