Quantum sensing and imaging of spin-orbit-torque-driven spin dynamics in noncollinear antiferromagnet Mn3Sn

Abstract

Novel noncollinear antiferromagnets with spontaneous time-reversal symmetry breaking, nontrivial band topology, and unconventional transport properties have received immense research interest over the past decade due to their rich physics and enormous promise in technological applications. One of the central focuses in this emerging field is exploring the relationship between the microscopic magnetic structure and exotic material properties. Here, the nanoscale imaging of both spin-orbit-torque-induced deterministic magnetic switching and chiral spin rotation in noncollinear antiferromagnet Mn3Sn films using nitrogen-vacancy (NV) centers is reported. Direct evidence of the off-resonance dipole-dipole coupling between the spin dynamics in Mn3Sn and proximate NV centers is also demonstrated with NV relaxometry measurements. These results demonstrate the unique capabilities of NV centers in accessing the local information of the magnetic order and dynamics in these emergent quantum materials and suggest new opportunities for investigating the interplay between topology and magnetism in a broad range of topological magnets.

16 pages, 5 figures

References in corpus (8)

• Probing magnetism in 2D materials at the nanoscale with single spin microscopy
• Electrical Manipulation of a Topological Antiferromagnetic State
• Equilibrium magnetization at the boundary of a magnetoelectric antiferromagnet
• Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor
• Evaluation of spin diffusion length and spin Hall angle of antiferromagnetic Weyl semimetal Mn${}_3$Sn
• Kondo physics in antiferromagnetic Weyl semimetal Mn3+xSn1-x films
• Observation of Superconductivity Induced Ferromagnetism in an Fe-Chalcogenide Superconductor
• Electrical Control of Coherent Spin Rotation of a Single-Spin Qubit

Cited by in corpus (4)

• Magnetization switching in polycrystalline Mn3Sn thin film induced by self-generated spin-polarized current
• Nanoscale magnetic domains in polycrystalline Mn3Sn films imaged by a scanning single-spin magnetometer
• Noncollinear Antiferromagnetic Spintronics
• Quantum Sensing of Antiferromagnetic Magnon Two-Mode Squeezed Vacuum