Observation of cluster magnetic octupole domains in the antiferromagnetic Weyl semimetal Mn3Sn nanowire

Abstract

The antiferromagnetic Weyl semimetal Mn3Sn has attracted wide attention due to their vast anomalous transverse transport properties despite barely net magnetization. So far, the magnetic properties of Mn3Sn have been experimentally investigated on micrometer scale samples but not in nanometers. In this study, we measured the local anomalous Nernst effect of a (0001)-textured Mn3Sn nanowire using a tip-contact-induced temperature gradient with an atomic force microscope. Our approach directly provides the distribution of the cluster magnetic octupole moments in Mn3Sn with 80 nm spatial resolution, providing crucial information for integrating the Mn3Sn nanostructure into a memory device.

References in corpus (17)

• Berry Phase Effects on Electronic Properties
• Anomalous Hall effect
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
• Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal
• Electrical Manipulation of a Topological Antiferromagnetic State
• Giant Anomalous Hall Effect in the Chiral Antiferromagnet Mn3Ge
• Cluster multipole theory for anomalous Hall effect in antiferromagnets
• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• Imaging and writing magnetic domains in the non-collinear antiferromagnet Mn${}_{\text{3}}$Sn
• Heat flux sensing by anomalous Nernst effect in Fe-Al thin films on a flexible substrate
• Nanoscale heat transfer at contact between a hot tip and a substrate
• Quantum sensing and imaging of spin-orbit-torque-driven spin dynamics in noncollinear antiferromagnet Mn3Sn
• Nanoscale magnetic domains in polycrystalline Mn3Sn films imaged by a scanning single-spin magnetometer
• Identifying the octupole Antiferromagnetic domain orientation in Mn${}_3$NiN by scanning Anomalous Nernst Effect microscopy
• Local spin Seebeck imaging with scanning thermal probe
• High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy

Cited by in corpus (2)

• Orthogonal Spin-Orbit Torque-Induced Deterministic Switching in NiO
• Quantum Heat Under the Microscope: A Perspective on Cryogenic Scanning Thermal Microscopy