Skyrmions in a Doped Antiferromagnet

Abstract

Magnetization and magnetoresistance have been measured in insulating antiferromagnetic La_{2}Cu_{0.97}Li_{0.03}O_{4} over a wide range of temperatures, magnetic fields, and field orientations. The magnetoresistance step associated with a weak ferromagnetic transition exhibits a striking nonmonotonic temperature dependence, consistent with the presence of skyrmions.

4+ pages, 3 figures (some low resolution), supplementary material (3 pages); discussion expanded, references added; as published

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• Interfacial Dzyaloshinskii-Moriya Interaction of Antiferromagnetic Materials
• Collapse of Skyrmions in 2d Ferro- and Antiferromagnets
• Consideration of Thermal Hall Effect in Undoped Cuprates
• Berry-phase effects and electronic dynamics in noncollinear antiferromagnetic texture
• Current-driven nucleation and propagation of antiferromagnetic skyrmionium
• Tuning of topological properties in the strongly correlated antiferromagnet Mn${}_3$Sn via Fe doping
• Symmetry Analysis of Holes Localized on a Skyrmion in a Doped Antiferromagnet
• Numerical Studies on Antiferromagnetic Skyrmions in Nanodisks by Means of A New Quantum Simulation Approach
• Topological structures in unconventional scenario for 2D cuprates
• Topologically stable gapped state in a layered superconductor
• Quantum States of a Skyrmion in a 2D Antiferromagnet
• Coexistence of magnetic and charge order in a two-component order parameter description of the layered superconductors
• A proposal for skyrmion-based diode-like device in antiferromagnetic nanostripe
• Skyrmion bound state and dynamics in an antiferromagnetic bilayer racetrack
• Evidence for skyrmions in the high-temperature superconductors
• Holes Localized on a Skyrmion in a Doped Antiferromagnet on the Honeycomb Lattice: Symmetry Analysis
• Hole-doping driven antiparallel magnetic order underlying the superconducting and pseudogap states in high-temperature cuprate superconductor
• Exchange tensors, generalized RKKY interactions, and magnetization dynamics in heterostructures of ferromagnets and topological insulators
• Destruction of Magnetic Long-Range Order by Hole-Induced Skyrmions in Two-Dimensional Heisenberg Model
• Unusual Multiple Magnetic Transitions and Anomalous Hall Effect Observed in Antiferromagnetic Weyl Semimetal, Mn${}_{2.94}$Ge (Ge-rich)