Baromagnetic Effect in the Hexagonal Mn<sub>3</sub>Sn System

Kuangdi, Xu; Zhang, Y. L.; Cao, Yiming; He, Xijia; Li, Z.; Wei, Shengxian; Kang, Yanru; Jing, Chao

doi:10.1109/tmag.2017.2695668

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…4(e)]. Similar pressure dependent shifting of the low temperature transition has also been reported earlier [41]. By further reducing the Mn concentration in Mn 3.03 Sn 0.97 , the ambient pressure transition in the M (T ) appears at around 220 K [Fig.…”

Section: (E) [See Table II (Appendix A)supporting

confidence: 79%

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Singh,

Pradhan

et al. 2020

Preprint

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Here, we present a detailed theoretical and experimental study on the pressure induced switching of anomalous Hall effect (AHE) in the triangular antiferromagnetic (AFM) compound Mn3Sn. Our theoretical model suggests pressure driven significant splitting of the in-plane Mn bond lengths i.e. an effective trimerization, which in turn stabilizes a helical AFM ground state by modifying the inter-plane exchange parameters in the system. We experimentally demonstrate that the AHE in Mn3Sn reduces from 5 µΩ cm at ambient pressure to zero at an applied pressure of about 1.5 GPa. Furthermore, our pressure dependent magnetization study reveals that the conventional triangular AFM ground state of Mn3Sn systematically transforms into the helical AFM phase where the symmetry does not support a non-vanishing Berry curvature required for the realization of a finite AHE. The pressure dependent x-ray diffraction (XRD) study rules out any role of structural phase transition in the observed phenomenon. In addition, the temperature dependent in-plane lattice parameter at ambient pressure is found to deviate from the monotonic behavior when the system enters into the helical AFM phase, thereby, supporting the proposed impact of trimerization in controlling the AHE. We believe that the present study makes an important contribution towards understanding the stabilization mechanism of different magnetic ground states in Mn3Sn and related materials for their potential applications pertaining to AHE switching.

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Section: (E) [See Table II (Appendix A)supporting

confidence: 79%

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Singh,

Pradhan

et al. 2020

Preprint

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“…Figure 2 shows the XRD patterns of Mn 3 Sn-NS and Mn 3 Sn-RS at room temperature, respectively. From the refined XRD patterns it can be seen that no trace of the tetragonal phase is found in Mn 3 Sn-RS, consistent with [39][40][41][42], unlike that reported for Mn 3 Ge [37]. Therefore, structural phase transition can be excluded in our work.…”

supporting

confidence: 84%

Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn₃Sn

Deng¹,

Zhao²,

Wang³

et al. 2022

J. Phys. D: Appl. Phys.

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Here, the effect of residual strain generated by uniaxial stress applied to polycrystalline Mn3Sn on magnetic properties and Hall effect is investigated. Contrary to the role of pressure in Mn3Sn, both Hall measurements and our theoretically calculated kagome lattice distortions suggest that residual strain is beneficial for suppressing the magnetic transition from the inverse triangular AFM state to the helical AFM state. Furthermore, the topological Hall effect is observed in Mn3Sn over the entire temperature range from 5 K to 400 K due to residual strain. Combined with the magnetic measurements, we speculate that THE originates from residual strain-induced non-coplanar AFM structure. Our findings point out a method to realize the chiral non-coplanar AFM structure through strain engineering, thereby providing a path for the construction of topological antiferromagnets.

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“…[ 9,16 ] Several external tools, such as magnetic or electrical fields and/or pressure, can be used for the manipulation of magnetic moment orientations within the Kagome plane hosting the inverse triangular order. Xu et al [ 17 ] investigated the magnetic behaviors of polycrystalline Mn 3 Sn under hydrostatic pressure. Ideally the magnetic moments of Mn are oriented with 120° separation and cancel each other at ambient pressure (see left inset of Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…However, the magnetization of the triangular AFM phase can get modified by the application of hydrostatic pressure due to pressure‐induced reduction in the MnMn separation. Xu et al [ 17 ] found that the magnetization of the triangular AFM phase is increased while applying hydrostatic pressure. This change is mainly a result of a varying MnMn separation under pressure.…”

Section: Introductionmentioning

confidence: 99%

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

Lingannan

Singh

Joseph

et al. 2021

Physica Rapid Research Ltrs

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A systematic synchrotron high‐pressure X‐ray powder diffraction study of Mn3Sn up to 9 GPa is reported. In this pressure range, the crystal symmetry remains in the hexagonal P63/mmc space group, with a continuous reduction of the lattice parameters. Analysis indicates that the Mn3Sn system may have a different magnetic ground state above 4 GPa due to varying local atomic interactions. This is brought about by the slightly varying compression rate for the in‐plane a‐ and out‐of‐plane c‐axis, respectively, ≈−0.0235 and ≈−0.0176 Å GPa−1. The results contribute to the understanding of the crystal structure to the external continuous tuning parameter pressure, which modulates the geometrical arrangement of the atomic species in Mn3Sn, thus impacting the interesting physical properties such as the large anomalous Hall effect.

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Baromagnetic Effect in the Hexagonal Mn₃Sn System

Cited by 5 publications

References 20 publications

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn₃Sn

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa

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Baromagnetic Effect in the Hexagonal Mn3Sn System

Cited by 5 publications

References 20 publications

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn$_3$Sn

Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn3Sn

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn3Sn up to 9 GPa

Contact Info

Product

Resources

About

Baromagnetic Effect in the Hexagonal Mn₃Sn System

Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn₃Sn

High‐Pressure Structural Investigation of Anomalous Hall Effect Compound Mn₃Sn up to 9 GPa