Tuning of topological properties in the strongly correlated antiferromagnet 
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 via Fe doping

Low, Achintya; Ghosh, Susanta; Changdar, Susmita; Routh, Sayan; Purwar, Shubham; Thirupathaiah, S.

doi:10.1103/physrevb.106.144429

Cited by 10 publications

(15 citation statements)

References 85 publications

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“…−1 (0.24 MJ m −3 ), respectively, which indicates that magnetization easy axis is the c-axis. This point agrees with the experimentally observed out-of-plane magnetic anisotropy at x = 0.35 11) and x = 0.58. 7) At x ⩾ 1.00, the MAEs turn to be negative and the IFM phase is most stable.…”

Section: Energy Differencessupporting

confidence: 91%

“…[6][7][8][9] For example, at x = 0.58, 7) x = 0.90, 8) and x = 1.10, 9) by the measurement of temperature dependence of magnetization under external magnetic field, it has been understood that the ferromagnetic (FM) and antiferromagnetic (AFM) phases coexist at low temperatures. 10) Moreover, at x = 0.35 11) and x = 0.58, 7) the MAEs are 0.53 MJ m −3 and 0.47 MJ m −3 , 12 ) respectively, indicating that the easy magnetization axis is the c-axis. As x is increased up to 1.50 and 10% of Sn is substituted by Sb, i.e.…”

Section: Introductionmentioning

confidence: 94%

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Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Tagami,

Ohno,

Nara

et al. 2024

Jpn. J. Appl. Phys.

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Aiming at clarifying the structures and magnetic anisotropies of kagome Mn3-xFexSn crystal over the wide range of x, we theoretically investigate the x-dependence of lattice parameters and bond lengths of their six magnetic phases by the first-principles calculations, and discuss their stabilities. Under the virtual crystal approximation at the Mn/Fe sites with a composition increment of x=0.25, we find the following points. First, the lattice parameters and intra-plane first-neighbor bond lengths highly depend on the magnetic structures. Second, at x≤0.25, the in-plane noncollinear antiferromagnetic phase is most stable. Third, at x=0.50, magnetic structures such as the out-of-plane spin canting structure, which are like superpositions of the antiferromagnetic and ferromagnetic phases, are stable, and the magnetization easy axis is the c-axis. Finally, at x≥1.00, the in-plane ferromagnetic phase is most stable, indicating that the easy axis is in the ab-plane, and the magnetocrystalline anisotropy energy reaches -1.60 MJ/m3 at x=3.00.

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Section: Energy Differencessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 94%

Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Tagami,

Ohno,

Nara

et al. 2024

Jpn. J. Appl. Phys.

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“…Among the MWSMs, noncollinear and coplanar Mn 3 X (X = Sn and Ge) antiferromagnets have recently received a great deal of attention from the research community due to their distinct magnetic and topological properties despite sharing a similar crystal structure. For instance, Mn 3 Sn shows a magnetic transition within 260-275 K from a high-temperature noncollinear antiferromagnetic (AFM) order to a low-temperature spin-spiral structure [17][18][19]. In contrast, no such magnetic transition has been observed to date in Mn 3 Ge down to the lowest possible temperature [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Unusual multiple magnetic transitions and anomalous Hall effect observed in antiferromagnetic Weyl semimetal, Mn_2.94Ge (Ge-rich)

Ghosh,

Low,

Changdar

et al. 2024

J. Phys.: Condens. Matter

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We report on the magnetic and Hall effect measurements of the magnetic Weyl semimetal, Mn$_{2.94}$Ge (Ge-rich) single crystal. From the magnetic properties study, we identify unusual multiple magnetic transitions below the N$\acute{e}$el temperature of 353 K, such as the spin-reorientation ($T_{SR}$) and ferromagnetic-like transitions. Consistent with the magnetic properties, the Hall effect study shows unusual behavior around the spin-reorientation transition. Specifically, the anomalous Hall conductivity (AHC) increases with increasing temperature, reaching a maximum at $T_{SR}$, which then gradually decreases with increasing temperature. This observation is quite in contrast to the Mn$_{3+\delta}$Ge (Mn-rich) system, though both compositions share the same hexagonal crystal symmetry. This study unravels the sensitivity of magnetic and topological properties on the Mn concentration.

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“…However, doping foreign elements can be an effective way to induce the out-of-plane moment and hence the finite THE in the system. [40] DOI: 10.1002/pssr.202300174 Topologically protected nontrivial spin structures attract significant interest in condensed matter physics for their utilization in low-power-consumption spintronics devices, memory devices, etc. The topological Hall effect (THE) is an additional Hall resistivity in the system arising from real-space Berry curvature picked up by conduction electron passing through the nontrivial spin texture.…”

Section: Introductionmentioning

confidence: 99%

“…However, doping foreign elements can be an effective way to induce the out‐of‐plane moment and hence the finite THE in the system. [ 40 ]…”

Section: Introductionmentioning

confidence: 99%

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet

Kumar

Shukla

Shahi

et al. 2023

Physica Rapid Research Ltrs

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Topologically protected nontrivial spin structures attract significant interest in condensed matter physics for their utilization in low‐power‐consumption spintronics devices, memory devices, etc. The topological Hall effect (THE) is an additional Hall resistivity in the system arising from real‐space Berry curvature picked up by conduction electron passing through the nontrivial spin texture. Compared to expensive neutron diffraction measurements, THE is often used as a cost‐effective tool to investigate nontrivial spin texture in the materials. In the present manuscript, THE in the (Mn1−xFex)3.25Ge (x = 0.4) alloy is studied using magneto‐transport measurements. Maximum THE is found in the system about 0.65 μΩ cm at 150 K, which is in contrast to the pristine Mn3Ge that has zero THE. The strong temperature variation of THE suggests that the noncoplanar spin structure due to competition among the magneto‐crystalline anisotropy, antiferromagnetic coupling, and ferromagnetic exchange interaction is the main source of THE in the present system. Herein, it is shown that chemical doping can be an effective way to induce THE in the material with vanishing THE in its parent phase.

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Tuning of topological properties in the strongly correlated antiferromagnet Mn3Sn via Fe doping

Cited by 10 publications

References 85 publications

Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Unusual multiple magnetic transitions and anomalous Hall effect observed in antiferromagnetic Weyl semimetal, Mn_2.94Ge (Ge-rich)

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet

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Tuning of topological properties in the strongly correlated antiferromagnet Mn3Sn via Fe doping

Cited by 10 publications

References 85 publications

Magnetic structures and magnetic anisotropy of Mn3−x Fe x Sn studied by first-principles calculations

Magnetic structures and magnetic anisotropy of Mn3−x Fe x Sn studied by first-principles calculations

Unusual multiple magnetic transitions and anomalous Hall effect observed in antiferromagnetic Weyl semimetal, Mn2.94Ge (Ge-rich)

Topological Hall Effect in (Mn1−xFex)3.25Ge (x = 0.4) Hexagonal Magnet

Contact Info

Product

Resources

About

Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Magnetic structures and magnetic anisotropy of Mn_3−xFe_xSn studied by first-principles calculations

Unusual multiple magnetic transitions and anomalous Hall effect observed in antiferromagnetic Weyl semimetal, Mn_2.94Ge (Ge-rich)

Topological Hall Effect in (Mn_1−xFe_x)_3.25Ge (x = 0.4) Hexagonal Magnet