Tuning of Electrical, Magnetic, and Topological Properties of Magnetic Weyl Semimetal Mn${}_{3+x}$Ge by Fe doping

Abstract

We report on the tuning of electrical, magnetic, and topological properties of the magnetic Weyl semimetal (Mn${}_{3+x}$Ge) by Fe doping at the Mn site, Mn${}_{(3+x)-\delta }$Fe${}_{\delta }$Ge ($\delta$=0, 0.30, and 0.62). Fe doping significantly changes the electrical and magnetic properties of Mn${}_{3+x}$Ge. The resistivity of the parent compound displays metallic behavior, the system with $\delta$=0.30 of Fe doping exhibits semiconducting or bad-metallic behavior, and the system with $\delta$=0.62 of Fe doping demonstrates a metal-insulator transition at around 100 K. Further, we observe that the Fe doping increases in-plane ferromagnetism, magnetocrystalline anisotropy, and induces a spin-glass state at low temperatures. Surprisingly, topological Hall state has been noticed at a Fe doping of $\delta$=0.30 that is not found in the parent compound or with $\delta$=0.62 of Fe doping. In addition, spontaneous anomalous Hall effect observed in the parent system is significantly reduced with increasing Fe doping concentration.

arXiv comment16 pages and 5 figures, accepted in Journal of Physics: Condensed Matter

References in corpus (44)

• Skyrmion Lattice in a Chiral Magnet
• Topological Hall effect in the A-phase of MnSi
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Ferromagnetism in semiconductors and oxides: prospects from a ten years' perspective
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Massive Dirac fermions in a ferromagnetic kagome metal
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Magnetic Weyl Semimetal Phase in a Kagome Crystal
• Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
• Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2
• Multiple-q states and skyrmion lattice of the triangular-lattice Heisenberg antiferromagnet under magnetic fields
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice
• Giant Anomalous Hall Effect in the Chiral Antiferromagnet Mn3Ge
• Robust formation of skyrmions and topological Hall effect in epitaxial thin films of MnSi
• Nature of unconventional pairing in the kagome superconductors AV${}_3$Sb${}_5$
• Effective bilinear-biquadratic model for noncoplanar ordering in itinerant magnets
• Orbital-selective Dirac fermions and extremely flat bands in frustrated kagome-lattice metal CoSn
• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• Anomalous Hall effect and topological defects in antiferromagnetic Weyl semimetals: Mn${}_3$Sn/Ge
• Giant topological Hall effect in correlated oxide thin films
• Cluster spin-glass behaviour and memory effect in Cr${}_{0.5}$Fe${}_{0.5}$Ga
• Berry curvature unravelled by the Nernst effect in Mn${}_3$Ge
• Field induced topological Hall effect in non-coplanar triangular antiferromagnetic geometry of Mn3Sn
• Dimensional Crossover Induced Topological Hall Effect in a Magnetic Topological Insulator
• Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet PdCrO2
• Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry
• Magnetic Phase Dependence of the Anomalous Hall Effect in Mn${}_3$Sn Single Crystals
• Anomalous and topological Hall effects in epitaxial thin films of the noncollinear antiferromagnet Mn${}_3$Sn
• Large topological Hall effect in a geometrically frustrated kagome magnet Fe${}_3$Sn${}_2$
• Finite-temperature violation of the anomalous transverse Wiedemann-Franz law
• Magnetic domain wall Skyrmions
• Chiral domain walls of Mn${}_3$Sn and their memory
• Observation of domain wall bimerons in chiral magnets
• Controllable chirality-induced geometrical Hall effect in a frustrated highly-correlated metal
• Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe${}_{1-y}$Co${}_y$Ge films
• Domain wall Skyrmions
• General theory of topological Hall effect in systems with chiral spin textures
• Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe1.3Sb
• The chiral Anomalous Hall effect in re-entrant AuFe alloys
• Wigner solids of domain wall skyrmions
• Tuning of topological properties in the strongly correlated antiferromagnet Mn${}_3$Sn via Fe doping
• Robust metastable skyrmions with tunable size in the chiral magnet FePtMo${}_3$N
• Anomalous Hall effect and magnetic structure of the topological semimetal (Mn${}_{0.78}$Fe${}_{0.22}$)${}_3$Ge

Cited by in corpus (1)

• Weyl points and anomalous transport effects tuned by the Fe doping in Mn${}_3$Ge Weyl semimetal