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Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure

The role of magnon-phonon coupling in the low-temperature behavior of the spin Seebeck effect (SSE) in YIG/Pt has been puzzling for more than a decade. To elucidate the origin of the anomalous peak around 80 K, we investigate the temperature evolution of SSE, spin Hall magnetoresistance (SMR), and m...

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Main Authors: V.Kalappattil, R.Das, M.H.Phan, H.Srikanth
Format: Bài trích
Language:English
Published: Elsevier 2022
Subjects:
Anisotropy-mediated
Magnetoresistance
Online Access:https://www.sciencedirect.com/science/article/abs/pii/S030488532200138X?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5958
https://doi.org/10.1016/j.jmmm.2022.169173
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spelling oai:localhost:PNK-59582022-08-17T05:54:51Z Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure V.Kalappattil R.Das M.H.Phan H.Srikanth Anisotropy-mediated Magnetoresistance The role of magnon-phonon coupling in the low-temperature behavior of the spin Seebeck effect (SSE) in YIG/Pt has been puzzling for more than a decade. To elucidate the origin of the anomalous peak around 80 K, we investigate the temperature evolution of SSE, spin Hall magnetoresistance (SMR), and magnetic anisotropy in the same YIG/Pt heterostructure. We find that these effects, along with magnetic damping, show the peaks at the same temperature (∼80 K). This simultaneous occurrence, where no heat is applied in the case of SMR, rules out the phonon-magnon drag related origin of SSE in the YIG/Pt system. We further show that the intrinsic surface anisotropy behavior in YIG is responsible for controlling the SSE, SMR, and magnetic damping in the YIG/Pt structure. Our findings not only help to understand these effects fundamentally but also provide an effective way for improving them by manipulating the surface magnetic anisotropy for spin caloritronic applications. 2022-07-13T02:00:06Z 2022-07-13T02:00:06Z 2022 Bài trích https://www.sciencedirect.com/science/article/abs/pii/S030488532200138X?via%3Dihub https://dlib.phenikaa-uni.edu.vn/handle/PNK/5958 https://doi.org/10.1016/j.jmmm.2022.169173 en Elsevier
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Anisotropy-mediated
Magnetoresistance
spellingShingle Anisotropy-mediated
Magnetoresistance
V.Kalappattil
R.Das
M.H.Phan
H.Srikanth
Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
description The role of magnon-phonon coupling in the low-temperature behavior of the spin Seebeck effect (SSE) in YIG/Pt has been puzzling for more than a decade. To elucidate the origin of the anomalous peak around 80 K, we investigate the temperature evolution of SSE, spin Hall magnetoresistance (SMR), and magnetic anisotropy in the same YIG/Pt heterostructure. We find that these effects, along with magnetic damping, show the peaks at the same temperature (∼80 K). This simultaneous occurrence, where no heat is applied in the case of SMR, rules out the phonon-magnon drag related origin of SSE in the YIG/Pt system. We further show that the intrinsic surface anisotropy behavior in YIG is responsible for controlling the SSE, SMR, and magnetic damping in the YIG/Pt structure. Our findings not only help to understand these effects fundamentally but also provide an effective way for improving them by manipulating the surface magnetic anisotropy for spin caloritronic applications.
format Bài trích
author V.Kalappattil
R.Das
M.H.Phan
H.Srikanth
author_facet V.Kalappattil
R.Das
M.H.Phan
H.Srikanth
author_sort V.Kalappattil
title Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
title_short Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
title_full Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
title_fullStr Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
title_full_unstemmed Surface magnetic anisotropy-mediated spin Hall magnetoresistance and spin Seebeck effects in a YIG/Pt heterostructure
title_sort surface magnetic anisotropy-mediated spin hall magnetoresistance and spin seebeck effects in a yig/pt heterostructure
publisher Elsevier
publishDate 2022
url https://www.sciencedirect.com/science/article/abs/pii/S030488532200138X?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5958
https://doi.org/10.1016/j.jmmm.2022.169173
_version_ 1751856319258689536
score 8.891053

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