Chiral-spin rotation of non-collinear antiferromagnet by spin–orbit torque

Takeuchi, Yoichi; Yamane, Yuta; Yoon, Ju-Young; Itoh, Ryuichi; Jinnai, Butsurin; Kanai, Shun; Ieda, Jun’ichi; Fukami, Shunsuke; Ohno, Hideo

doi:10.1038/s41563-021-01005-3

Cited by 126 publications

(115 citation statements)

References 43 publications

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“…[0001] direction was parallel to the MgO [001] direction, and the Mn 3 Sn [1120] direction was parallel to the MgO [110] direction, which is consistent with findings of previous studies 21,25 .…”

Section: Resultssupporting

confidence: 90%

“…Note that the XRD pattern did not show peaks of ferromagnetic WMn 2 Sn impurities, which were reported to appear in W/M3Sn heterostructures 21,25 .…”

Section: Resultsmentioning

confidence: 79%

“…The Mn 3 Sn thin film with the Kagome planes standing normal to the sample surface [21][22][23] was grown on a single-crystalline MgO(110) substrate with a W seed layer. The sample structure, MgO(110) substrate/W (15 nm)/Mn 3 Sn (40 nm)/MgO (3 nm), is schematically shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…induces strong ferromagnetic-like responses such as the anomalous Hall effect 7,14 , anomalous Nernst effect 15,16 , and magneto-optical Kerr effect 17,18 . Octupole polarization switching or manipulation by electric means has also recently been demonstrated [19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

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Observation of spontaneous x-ray magnetic circular dichroism in a chiral antiferromagnet

Sakamoto,

Higo,

Shiga

et al. 2021

Preprint

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X-ray magnetic circular dichroism (XMCD) signals are usually absent in antiferromagnets. In this letter, we report the observation of spontaneous XMCD spectra originating from the inverse triangular spin structure, or the polarization of the cluster magnetic octupole, in the chiral antiferromagnet Mn 3 Sn thin film. The result is consistent with the recent theoretical predictions that the inverse triangular spin structure can give rise to finite XMCD signals in the absence of net magnetization [

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Section: Resultssupporting

confidence: 90%

“…Note that the XRD pattern did not show peaks of ferromagnetic WMn 2 Sn impurities, which were reported to appear in W/M3Sn heterostructures 21,25 .…”

Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Observation of spontaneous x-ray magnetic circular dichroism in a chiral antiferromagnet

Sakamoto,

Higo,

Shiga

et al. 2021

Preprint

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“…The former is of interest in optical experiments such as [10], where THz pulses have been used to switch the order in a two-sublattice antiferromagnet. The latter is partly motivated by the manipulation of the local spin order through an STT achieved in [11,12]. We shall show that augmenting the setup with a strain we can use it to control the direction of the Hall vector along the lines of [9].…”

mentioning

confidence: 99%

Tuning the Hall response of a non-collinear antiferromagnet with spin-transfer torques

Dasgupta¹,

Tretiakov²

2022

Preprint

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The kagome lattice antiferromagnets Mn3X(= Sn, Ge) have a non-collinear 120 • ordered ground state, which engenders a strong anomalous Hall response. It has been shown that this response is linked to the magnetic order and can be manipulated through it. In particular, previous works have shown that uniaxial strain can be effectively used to manipulate the magnetic order and hence the anomalous Hall response by changing the local energy landscape. Here we use a combination of strain and spin-transfer torques to deterministically switch between states of different chirality and Hall response. Furthermore, we show that a similar manipulation of the strained sample can be obtained by an oscillating magnetic field, which is of potential interest in optical pulses.

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Benchmarking Noise and Dephasing in Emerging Electrical Materials for Quantum Technologies

2022

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Chiral-spin rotation of non-collinear antiferromagnet by spin–orbit torque

Cited by 126 publications

References 43 publications

Observation of spontaneous x-ray magnetic circular dichroism in a chiral antiferromagnet

Observation of spontaneous x-ray magnetic circular dichroism in a chiral antiferromagnet

Tuning the Hall response of a non-collinear antiferromagnet with spin-transfer torques

Benchmarking Noise and Dephasing in Emerging Electrical Materials for Quantum Technologies

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