Giant Magnetochiral Anisotropy in Weyl-semimetal WTe2 Induced by Diverging Berry Curvature

Abstract

The concept of Berry curvature is essential for various transport phenomena. However, an effect of the Berry curvature on magnetochiral anisotropy, i.e. nonreciprocal magneto-transport, is still elusive. Here, we report the Berry curvature originates the large magnetochiral anisotropy. In Weyl-semimetal WTe2, we observed the strong enhancement of the magnetochiral anisotropy when the Fermi level is located near the Weyl points. Notably, the maximal figure of merit $\bar{\gamma }$ reaches $1.2\times 10^{-6}{\mathrm{m}}^2{\mathrm{T}}^{-1}{\mathrm{A}}^{-1}$, which is the largest ever reported in bulk materials. Our semiclassical calculation shows that the diverging Berry curvature at the Weyl points strongly enhances the magnetochiral anisotropy.

26 pages

References in corpus (11)

• Titanic Magnetoresistance in WTe2
• Nonlinear Hall Effects
• Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe${}_2$
• Semiclassical theory of nonlinear magneto-optical responses with applications to topological Dirac/Weyl semimetals
• Gate-tuneable and chirality-dependent charge-to-spin conversion in Tellurium nanowires
• Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers
• Experimental observation of anisotropic Adler-Bell-Jackiw anomaly in type-II Weyl semimetal WTe${}_{1.98}$ crystals at the quasi-classical regime
• Strong electrical magneto-chiral anisotropy in tellurium
• Nonlinear magnetotransport shaped by Fermi surface topology and convexity in WTe2
• Giant magnetochiral anisotropy from quantum confined surface states of topological insulator nanowires
• Chiral Anomaly and Second Harmonic Generation in Weyl Semimetals

Cited by in corpus (11)

• Non-linear Transport in Non-centrosymmetric Systems: From Fundamentals to Applications
• The Wannier Function Software Ecosystem for Materials Simulations
• Room temperature realization of artificial chiral magnets with reprogrammable magnon nonreciprocity at zero field
• Quantum-metric-induced giant and reversible nonreciprocal transport phenomena in chiral loop-current phases of kagome metals
• Apparent nonreciprocal transport in FeSe bulk crystals
• Quantum theory of the magnetochiral anisotropy coefficient in ZrTe${}_5$
• Nonlinear magnetotransport in MoTe${}_2$
• Room temperature quantum metric effect in TbMn6Sn6
• Orbital enhanced intrinsic nonlinear planar Hall effect for probing topological phase transition in CuTlSe${}_2$
• Identifying geometric third-order nonlinear transport in disordered materials
• Prediction of a layer nonlinear Hall effect in bilayer nonmagnetic or antiferromagnetic systems