Large spontaneous Hall effect with flexible domain control in an antiferromagnetic material TaMnP

Abstract

Antiferromagnets without parity-time ($\mathcal{P}\mathcal{T}$) symmetry offer novel perspectives in the field of functional magnetic materials. Among them, those with ferromagnetic-like responses are promising candidates for future applications such as antiferromagnetic (AF) memory; however, examples showing large effects are extremely limited. In this study, we show that the orthorhombic system TaMnP exhibits a large anomalous Hall conductivity (AHC) $\sim 360-370$ ${\Omega }^{-1}$cm${}^{-1}$ in spite of the small net magnetization $\sim 10^{-2}$ ${\mu }_B$/Mn. Our neutron scattering experiment and the observation of the AH effect indicated that a magnetic structure of TaMnP was dominated by an AF component represented by $B_{3g}$ with the propagation vector $q=0$. Furthermore, we confirmed that the obtained AHC is among the largest observed in AF materials at zero fields. Additionally, our first-principles calculations revealed that the spin-orbit interaction originating in the nonmagnetic Ta-$5d$ electrons significantly contributes to enhancing Berry curvatures in the momentum space. We found that the magnetic fields along all the crystal axes triggered the AF domain switching, indicating the possibility of controlling the AF domain using the small net magnetization, which is symmetrically different.

8 pages, 6 figures

References in corpus (7)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Universal Scaling Behavior of Anomalous Hall Effect and Anomalous Nernst Effect in Itinerant Ferromagnets
• 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
• Field-tunable toroidal moment and anomalous Hall effect in noncollinear antiferromagnetic Weyl semimetal Co1/3TaS2
• Large anomalous Hall effect and unusual domain switching in an orthorhombic antiferromagnetic material NbMnP
• Intrinsic anomalous Hall effect arising from antiferromagnetic structure revealed by high-quality NbMnP

Cited by in corpus (3)

• Metallic $p$-wave magnet with commensurate spin helix
• Tuning of altermagnetism by strain
• Spontaneous Anomalous Hall Effect at Room Temperature in Antiferromagnetic Material NbMnAs