Tuning of topological properties in the strongly correlated antiferromagnet Mn${}_3$Sn via Fe doping

Abstract

Magnetic topological materials, in which strong correlations between magnetic and electronic properties of matter, give rise to various exotic phenomena such as anomalous Hall effect (AHE), topological Hall effect (THE), and skyrmion lattice. Here, we report on the electronic, magnetic, and topological properties of Mn${}_{3-x}$Fe${}_x$Sn single crystals ($x$=0, 0.25, and 0.35). Low temperature magnetic properties have been significantly changed with Fe doping. Most importantly, we observe that large uniaxial magnetocrystalline anisotropy that is induced by the Fe doping in combination with competing magnetic interactions at low temperature produce nontrivial spin-texture, leading to large topological Hall effect in the doped systems at low temperatures. Our studies further show that the topological properties of Mn${}_{3-x}$Fe${}_x$Sn are very sensitive to the Fe doping.

10 pages, 7 figures

References in corpus (15)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
• Semiclassical theories of the anomalous Hall effect
• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• Anomalous Hall effect of ferromagnetic Fe3Sn2 single crystal with geometrically frustrated kagome lattice
• Field induced topological Hall effect in non-coplanar triangular antiferromagnetic geometry of Mn3Sn
• Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry
• Thermodynamically stable skyrmion lattice in tetragonal frustrated antiferromagnet with dipolar interaction
• Chiral domain walls of Mn${}_3$Sn and their memory
• Domain wall Skyrmions
• Skyrmions in a Doped Antiferromagnet
• Doping control of magnetic anisotropy for stable antiskyrmion formation in schreibersite (Fe,Ni)${}_3$P with $S_4$ symmetry
• Wigner solids of domain wall skyrmions
• Large Tunable Anomalous Hall Effect in the Kagom$\acute{e}$ Antiferromagnet U${}_3$Ru${}_4$Al${}_{12}$