SciPost Physics

SciPost Phys. 5, 063 (2018) · published 18 December 2018

• doi: 10.21468/SciPostPhys.5.6.063
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Abstract

Mn$_{3}$X (X= Sn, Ge) are noncollinear antiferromagnets hosting a large anomalous Hall effect (AHE). Weyl nodes in the electronic dispersions are believed to cause this AHE, but their locus in the momentum space is yet to be pinned down. We present a detailed study of the Hall conductivity tensor and magnetization in Mn$_{3}$Sn crystals and find that in the presence of a moderate magnetic field, spin texture sets the orientation of the $k$-space Berry curvature with no detectable in-plane anisotropy due to the $Z_6$ symmetry of the underlying lattice. We quantify the energy cost of domain nucleation and show that themultidomain regime is restricted to a narrow field window. Comparing the field dependence of AHE and magnetization, we find that there is a distinct component in the AHE which does not scale with magnetization when the domain walls are erected. This so-called `topological' Hall effect provides indirect evidence for a non-coplanar spin components and real-space Berry curvature in domain walls.

• Balk et al., Comparing the anomalous Hall effect and the magneto-optical Kerr effect through antiferromagnetic phase transitions in Mn3Sn
  114, 032401 (2019) [Crossref]
• Xu et al., Finite-temperature violation of the anomalous transverse Wiedemann-Franz law
  Sci. Adv. 6, eaaz3522 (2020) [Crossref]
• Nakatsuji et al., Topological Magnets: Functions Based on Berry Phase and Multipoles
  Annu. Rev. Condens. Matter Phys. 13, 119 (2022) [Crossref]
• Guo et al., Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi
  Nat Commun 9, 4622 (2018) [Crossref]
• Li et al., A Monomaterial Nernst Thermopile with Hermaphroditic Legs
  Advanced Materials 33, 2100751 (2021) [Crossref]
• Li et al., Giant room temperature anomalous Hall effect and tunable topology in a ferromagnetic topological semimetal Co2MnAl
  Nat Commun 11, 3476 (2020) [Crossref]
• Reichlova et al., Role of topology in compensated magnetic systems
  12, 010902 (2024) [Crossref]
• Taylor et al., Anomalous and topological Hall effects in epitaxial thin films of the noncollinear antiferromagnet Mn3Sn
  Phys. Rev. B 101, 094404 (2020) [Crossref]
• Gao et al., Anisotropic optical and magneto-optical properties of antiferromagnetic Weyl semimetal Mn3Sn epitaxial thin films
  12, 091114 (2024) [Crossref]
• Wang et al., Noncollinear Mn3Sn for antiferromagnetic spintronics
  Materials Today Physics 28, 100878 100878 (2022) [Crossref]
• Low et al., Tuning of topological properties in the strongly correlated antiferromagnet Mn3Sn via Fe doping
  Phys. Rev. B 106, 144429 (2022) [Crossref]
• Higo et al., Omnidirectional Control of Large Electrical Output in a Topological Antiferromagnet
  Adv Funct Materials 31, 2008971 (2021) [Crossref]
• Li et al., Chiral domain walls of Mn3Sn and their memory
  Nat Commun 10, 3021 (2019) [Crossref]
• Li et al., Field-linear anomalous Hall effect and Berry curvature induced by spin chirality in the kagome antiferromagnet Mn3Sn
  Nat Commun 14, 1642 (2023) [Crossref]
• Hamara et al., Ultrafast helicity-dependent photocurrents in Weyl Magnet Mn3Sn
  Commun Phys 6, 320 (2023) [Crossref]
• Liu et al., Robust interface-induced unusual anomalous Hall effect in Mn3Sn/Pt bilayers
  Rare Met. 41, 3012 (2022) [Crossref]
• Wang et al., Topological Hall Effect in Thin Films of an Antiferromagnetic Weyl Semimetal Integrated on Si
  ACS Appl. Mater. Interfaces 15, 7572 (2023) [Crossref]
• Wang et al., Infrared imaging of magnetic octupole domains in non-collinear antiferromagnets
  11, nwad308 (2024) [Crossref]
• Yang et al., Critical behavior and magnetocaloric effect of the ferromagnetic Weyl semimetal candidate Co2−ZrSn single crystals
  Journal of Alloys and Compounds 886, 161118 161118 (2021) [Crossref]
• Ding et al., Intrinsic Anomalous Nernst Effect Amplified by Disorder in a Half-Metallic Semimetal
  Phys. Rev. X 9, 041061 (2019) [Crossref]
• Xu et al., Planar Hall effect caused by the memory of antiferromagnetic domain walls in Mn3Ge
  117, 222403 (2020) [Crossref]
• Deng et al., Effect of residual strain on magnetic properties and Hall effect in chiral antiferromagnet Mn3Sn
  J. Phys. D: Appl. Phys. 55, 275001 (2022) [Crossref]
• Balents, Antichiral order and spin reorientation transitions of triangle-based antiferromagnets
  Phys. Rev. B 106, L020403 (2022) [Crossref]
• Li et al., Free energy of twisting spins in Mn3Sn
  Phys. Rev. B 106, L020402 (2022) [Crossref]
• Meng et al., Magnetostriction, piezomagnetism and domain nucleation in a Kagome antiferromagnet
  Nat Commun 15, 6921 (2024) [Crossref]
• Cao et al., Optical study of the three-dimensional Weyl semimetal Mn3Sn
  Phys. Rev. B 108, 235109 (2023) [Crossref]
• Muduli et al., Evaluation of spin diffusion length and spin Hall angle of the antiferromagnetic Weyl semimetal Mn3Sn
  Phys. Rev. B 99, 184425 (2019) [Crossref]