Tuning the Hall response of a noncollinear antiferromagnet via spin-transfer torques and oscillating magnetic fields

Abstract

The kagome lattice antiferromagnets Mn${}_3$X(= Sn, Ge) have a noncollinear 120${}^{\circ }$ ordered ground state, which engenders a strong anomalous Hall response. It has been shown that this response is linked to the magnetic order and can be manipulated through it. Here we use a combination of strain and spin-transfer torques to control the magnetic order and hence switch deterministically between states of different chirality. Each of these chiral ground states has an anomalous Hall conductivity tensor in a different direction. Furthermore, we show that a similar manipulation of the strained sample can be obtained through oscillating magnetic fields, potentially opening a pathway to optical switching in these materials.

5 pages of text, 5 figures, accepted in Physical Review Research as a Letter

References in corpus (8)

• Electrical Manipulation of a Topological Antiferromagnetic State
• Piezomagnetic switching of anomalous Hall effect in an antiferromagnet at room temperature
• Integration of the Noncollinear Antiferromagnetic Metal Mn3Sn onto Ferroelectric Oxides for Electric-Field Control
• Giant Piezospintronic Effect in a Noncollinear Antiferromagnetic Metal
• Non-Collinear Spin Current for Switching of Chiral Magnetic Textures
• Zeeman term for the Néel vector in a two sublattice antiferromagnet using Dzyaloshinsky-Moriya interaction and magnetic field
• Magnetism and Magnetotransport in the Kagome Antiferromagnet ${\text{Mn}}_3\text{Ge}$
• Strain tuning the magnetic and transport properties of Mn${}_3$Ge

Cited by in corpus (1)

• Impact of strain on the SOT-driven dynamics of thin film Mn${}_3$Sn