Low-temperature quantum correction to anisotropic magnetoresistance in 
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 heterostructures

Zhu, Zhiqiang; Xu, Xiaoguang; Wang, Mengxi; Li, Chexin; Liu, Cheng; Meng, Kangkang; Wu, Yong; Chen, Jikun; Miao, Jun; Jiang, Yong

doi:10.1103/physrevb.105.184428

Phys. Rev. B

2022

DOI: 10.1103/physrevb.105.184428

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Low-temperature quantum correction to anisotropic magnetoresistance in Tm3Fe5O12/Pt heterostructures

Zhiqiang Zhu

Xiaoguang Xu

Mengxi Wang

et al.

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Cited by 4 publications

References 49 publications

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Orbital angular momentum contribution to angular dependent magnetoresistance in Tm3Fe5O12/Pt/CuOx films

Zhu,

Xu,

Meng

et al. 2024

Applied Physics Letters

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Recently, orbital angular momentum (OAM) has been experimentally proven to be an effective method for manipulating magnetic moments in magnetic metal systems. However, OAM cannot directly interact with magnetic insulators, as demonstrated by angular dependent magnetoresistance (ADMR) measurements. To further elucidate the effect of OAM on ADMR, a heavy metal layer was introduced between TmIG and CuOx. This allows the OAM to be transformed into spin angular momentum (SAM) via spin–orbit coupling (SOC). Comparing the ADMR of TmIG/Pt and TmIG/Pt/CuOx heterostructures, we confirmed that the transformed SAM maintains the polarized direction of OAM, leading to an increased magnetoresistance as the magnetic field rotated in yz-plane [MR(β)]. The contribution of OAM to MR(β) in the TmIG/Pt/CuOx heterostructure exhibits a similar temperature dependence to the spin Hall magnetoresistance in the TmIG/Pt heterostructure. Moreover, the contribution of OAM continuously increases with the thickness of the Pt layer, indicating a gradual transformation of OAM to SAM via SOC throughout the depth of the Pt layer. These findings not only reveal the diffusion process of OAM in the heavy metal Pt layer but also provide an important clue toward quantitatively understanding the OAM contribution to magnetization dynamics.

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Orbital angular momentum contribution to angular dependent magnetoresistance in Tm3Fe5O12/Pt/CuOx films

Zhu,

Xu,

Meng

et al. 2024

Applied Physics Letters

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Robust chiral spin transport in the antiferromagnetic iron oxide/heavy metal bilayers

Zhang,

Meng,

et al. 2024

Applied Physics Letters

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We have observed robust chiral spin torques and non-reciprocal charge transport behaviors in the α-Fe2O3/Pt bilayers through a combination of magnetic field and current-dependent second longitudinal harmonic resistance measurements. The interfacial Dzyaloshinskii–Moriya interaction induced magnetic chirality has been predicted to account for the sign reversal characteristic of the second longitudinal harmonic resistance with increasing the current amplitude. A physical model that considers the chirality dependence of both the asymmetric scattering and the giant Rashba spin–orbit coupling has been set up to uncover the microscopic interactions between charge, spin, and magnetic chirality. Our comprehensive approach leverages the semiclassical Boltzmann theory to validate the consistency between this model and our experimental findings. Through our investigation, we have established the pivotal role of interfacial magnetic chirality in determining both charge and spin transport behaviors within antiferromagnetic insulator/heavy metal bilayer systems. Our work not only enhances the comprehension of spin–orbit torques and non-reciprocal charge transport but also contributes to the broader understanding of these phenomena. The outcomes of this study have broader implications for the advancement of spintronics and related fields.

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Quantum cooperative corrections of weak antilocalization and weak localization in Pt/VI3 heterostructures

Tang,

Hao,

et al. 2024

Phys. Rev. B

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Low-temperature quantum correction to anisotropic magnetoresistance in Tm3Fe5O12/Pt heterostructures

Cited by 4 publications

References 49 publications

Orbital angular momentum contribution to angular dependent magnetoresistance in Tm3Fe5O12/Pt/CuOx films

Orbital angular momentum contribution to angular dependent magnetoresistance in Tm3Fe5O12/Pt/CuOx films

Robust chiral spin transport in the antiferromagnetic iron oxide/heavy metal bilayers

Quantum cooperative corrections of weak antilocalization and weak localization in Pt/VI3 heterostructures

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