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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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Tác giả chính:	V.Kalappattil, R.Das, M.H.Phan, H.Srikanth
Định dạng:	Bài trích
Ngôn ngữ:	English
Nhà xuất bản:	Elsevier 2022
Chủ đề:	Anisotropy-mediated Magnetoresistance
Truy cập trực tuyến:	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
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score	8.893527

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

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