Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO                         3                          Interfaces

Hongrui Zhang; Yang Ma; Hui Zhang; Xiaobing Chen; Shuanhu Wang; Gang Li; Yu Yun; Xi Yan; Yuansha Chen; Fengxia Hu; Jianwang Cai; Baogen Shen; Wei Han; Jirong Sun

doi:10.1021/acs.nanolett.8b04509

Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO ₃ Interfaces

Hongrui Zhang
, Yang Ma
, Hui Zhang
, Xiaobing Chen
, Shuanhu Wang
, Gang Li
, Yu Yun
, Xi Yan
, Yuansha Chen
, Fengxia Hu
, Jianwang Cai
, Baogen Shen
, Wei Han
, Jirong Sun

物理科学与技术学院

CAS - Institute of Physics
University of Chinese Academy of Sciences
Peking University
Collaborative Innovation Centre of Quantum Matter
Songshan Lake Materials Laboratory

科研成果: 期刊稿件 › 文章 › 同行评审

50 引用（Scopus）

摘要

With the help of the two-dimensional electron gas (2DEG) at the LaAlO ₃ -SrTiO ₃ interface, spin and charge currents can be interconverted. However, the conversion efficiency has been strongly depressed by LaAlO ₃ , which blocks spin transmission. It is therefore highly desired to explore 2DEGs sandwiched between ferromagnetic insulators that are transparent for magnons. By constructing epitaxial heterostructure with ferromagnetic EuO, which is conducting for spin current but insulating for electric current, and KTaO ₃ , we successfully obtained the 2DEGs, which can receive thermally injected spin current directly from EuO and convert the spin current to charge current via inverse Edelstein effect of the interface. Strong dependence of the spin Seebeck coefficient on the layer thickness of EuO is further observed and the propagation length for non-equilibrium magnons in EuO has been determined. The present work demonstrates the great potential of the 2DEGs formed by ferromagnetic oxides for spin caloritronics.

源语言	英语
页（从-至）	1605-1612
页数	8
期刊	Nano Letters
卷	19
期	3
DOI	https://doi.org/10.1021/acs.nanolett.8b04509
出版状态	已出版 - 13 3月 2019

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10.1021/acs.nanolett.8b04509

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Zhang, H., Ma, Y., Zhang, H., Chen, X., Wang, S., Li, G., Yun, Y., Yan, X., Chen, Y., Hu, F., Cai, J., Shen, B., Han, W., & Sun, J. (2019). Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO ₃ Interfaces Nano Letters, 19(3), 1605-1612. https://doi.org/10.1021/acs.nanolett.8b04509

@article{9b19ea2c81d04368a7dd2ed876357666,

title = " Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO 3 Interfaces ",

abstract = " With the help of the two-dimensional electron gas (2DEG) at the LaAlO 3 -SrTiO 3 interface, spin and charge currents can be interconverted. However, the conversion efficiency has been strongly depressed by LaAlO 3 , which blocks spin transmission. It is therefore highly desired to explore 2DEGs sandwiched between ferromagnetic insulators that are transparent for magnons. By constructing epitaxial heterostructure with ferromagnetic EuO, which is conducting for spin current but insulating for electric current, and KTaO 3 , we successfully obtained the 2DEGs, which can receive thermally injected spin current directly from EuO and convert the spin current to charge current via inverse Edelstein effect of the interface. Strong dependence of the spin Seebeck coefficient on the layer thickness of EuO is further observed and the propagation length for non-equilibrium magnons in EuO has been determined. The present work demonstrates the great potential of the 2DEGs formed by ferromagnetic oxides for spin caloritronics.",

keywords = "2DEG, Rashba spin splitting, inverse Edelstein effect, spin-charge conversion, thermal spin injection",

author = "Hongrui Zhang and Yang Ma and Hui Zhang and Xiaobing Chen and Shuanhu Wang and Gang Li and Yu Yun and Xi Yan and Yuansha Chen and Fengxia Hu and Jianwang Cai and Baogen Shen and Wei Han and Jirong Sun",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = mar,

day = "13",

doi = "10.1021/acs.nanolett.8b04509",

language = "英语",

volume = "19",

pages = "1605--1612",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "3",

}

Zhang, H, Ma, Y, Zhang, H, Chen, X, Wang, S, Li, G, Yun, Y, Yan, X, Chen, Y, Hu, F, Cai, J, Shen, B, Han, W & Sun, J 2019, ' Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO ₃ Interfaces ', Nano Letters, 卷 19, 号码 3, 页码 1605-1612. https://doi.org/10.1021/acs.nanolett.8b04509

Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO ₃ Interfaces . / Zhang, Hongrui; Ma, Yang; Zhang, Hui 等.
在: Nano Letters, 卷 19, 号码 3, 13.03.2019, 页码 1605-1612.

科研成果: 期刊稿件 › 文章 › 同行评审

TY - JOUR

T1 - Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO 3 Interfaces

AU - Zhang, Hongrui

AU - Ma, Yang

AU - Zhang, Hui

AU - Chen, Xiaobing

AU - Wang, Shuanhu

AU - Li, Gang

AU - Yun, Yu

AU - Yan, Xi

AU - Chen, Yuansha

AU - Hu, Fengxia

AU - Cai, Jianwang

AU - Shen, Baogen

AU - Han, Wei

AU - Sun, Jirong

PY - 2019/3/13

Y1 - 2019/3/13

N2 - With the help of the two-dimensional electron gas (2DEG) at the LaAlO 3 -SrTiO 3 interface, spin and charge currents can be interconverted. However, the conversion efficiency has been strongly depressed by LaAlO 3 , which blocks spin transmission. It is therefore highly desired to explore 2DEGs sandwiched between ferromagnetic insulators that are transparent for magnons. By constructing epitaxial heterostructure with ferromagnetic EuO, which is conducting for spin current but insulating for electric current, and KTaO 3 , we successfully obtained the 2DEGs, which can receive thermally injected spin current directly from EuO and convert the spin current to charge current via inverse Edelstein effect of the interface. Strong dependence of the spin Seebeck coefficient on the layer thickness of EuO is further observed and the propagation length for non-equilibrium magnons in EuO has been determined. The present work demonstrates the great potential of the 2DEGs formed by ferromagnetic oxides for spin caloritronics.

AB - With the help of the two-dimensional electron gas (2DEG) at the LaAlO 3 -SrTiO 3 interface, spin and charge currents can be interconverted. However, the conversion efficiency has been strongly depressed by LaAlO 3 , which blocks spin transmission. It is therefore highly desired to explore 2DEGs sandwiched between ferromagnetic insulators that are transparent for magnons. By constructing epitaxial heterostructure with ferromagnetic EuO, which is conducting for spin current but insulating for electric current, and KTaO 3 , we successfully obtained the 2DEGs, which can receive thermally injected spin current directly from EuO and convert the spin current to charge current via inverse Edelstein effect of the interface. Strong dependence of the spin Seebeck coefficient on the layer thickness of EuO is further observed and the propagation length for non-equilibrium magnons in EuO has been determined. The present work demonstrates the great potential of the 2DEGs formed by ferromagnetic oxides for spin caloritronics.

KW - 2DEG

KW - Rashba spin splitting

KW - inverse Edelstein effect

KW - spin-charge conversion

KW - thermal spin injection

UR - https://www.scopus.com/pages/publications/85061978691

U2 - 10.1021/acs.nanolett.8b04509

DO - 10.1021/acs.nanolett.8b04509

M3 - 文章

C2 - 30715894

AN - SCOPUS:85061978691

SN - 1530-6984

VL - 19

SP - 1605

EP - 1612

JO - Nano Letters

JF - Nano Letters

IS - 3

ER -

Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO 3 Interfaces

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Thermal Spin Injection and Inverse Edelstein Effect of the Two-Dimensional Electron Gas at EuO-KTaO ₃ Interfaces