Tuning Intrinsic Spin Hall Effect in Platinum/Ferrimagnetic Insulator Heterostructure in Moderately Dirty Regime

Tianhui Li; Lin Liu; Zehan Chen; Wei Jia; Jianxin Ye; Xudong Cai; Doudou Huang; Wanshan Li; Fukang Chen; Xinjun Li; Jiahao Chen; Boxi Dong; Hang Xie; Anyuan Pan; Chao Zhi; Hongyu An

doi:10.3390/nano13192721

Nanomaterials (Oct 2023)

Tuning Intrinsic Spin Hall Effect in Platinum/Ferrimagnetic Insulator Heterostructure in Moderately Dirty Regime

Tianhui Li,
Lin Liu,
Zehan Chen,
Wei Jia,
Jianxin Ye,
Xudong Cai,
Doudou Huang,
Wanshan Li,
Fukang Chen,
Xinjun Li,
Jiahao Chen,
Boxi Dong,
Hang Xie,
Anyuan Pan,
Chao Zhi,
Hongyu An

Affiliations

Tianhui Li: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Lin Liu: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Zehan Chen: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Wei Jia: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Jianxin Ye: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Xudong Cai: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Doudou Huang: College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China
Wanshan Li: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Fukang Chen: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Xinjun Li: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Jiahao Chen: College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China
Boxi Dong: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Hang Xie: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Anyuan Pan: Dealour Electric Co., Ltd., Jiaxing 314001, China
Chao Zhi: Dealour Electric Co., Ltd., Jiaxing 314001, China
Hongyu An: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China

DOI: https://doi.org/10.3390/nano13192721
Journal volume & issue: Vol. 13, no. 19
p. 2721

Abstract

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Studying the mechanisms of the spin Hall effect (SHE) is essential for the fundamental understanding of spintronic physics. By now, despite the intensive studies of SHE on heavy metal (HM)/metallic magnet heterostructures, the SHE on HM/ferrimagnetic insulator (FMI) heterostructures still remains elusive. Here, we study the mechanism of SHE in the Pt/Tm3Fe5O12 (TmIG) heterostructure. We first tune the crystallinity and resistivity of Pt by an annealing method, and then study the spin–orbit torque (SOT) in the tuned-Pt/TmIG devices. The SOT generation efficiency per unit electric field and spin Hall angle were obtained, which are insensitive to the annealing temperature. We further demonstrate that the intrinsic contribution in the moderately dirty regime is responsible for the SHE in our Pt/TmIG bilayer. Our study provides an important piece of information for the SHE in FMI-based spintronic physics.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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