Anomalous Nonlinear Magnetoconductivity in van der Waals Magnet CrSBr

Abstract

Nonlinear magnetoconductivity (NLMC) is a nonreciprocal transport response arising in non-centrosymmetric materials. However, this ordinary NLMC signal vanishes at zero magnetic field, limiting its potential for applications. Here, we report the observation of an anomalous NLMC controlled by internal order parameters such as the magnetization or Néel vectors. We achieve this response by breaking both inversion and time-reversal symmetry in artificial van der Waals heterostructures based on the magnetic CrSBr and insulating hBN. The nonreciprocal signal can be tuned between two different states in ferromagnetic monolayer CrSBr and among four different states in antiferromagnetic bilayer CrSBr, thanks to its metamagnetic transition. Remarkably, this output signal in the ferromagnetic (antiferromagnetic) state of CrSBr is three (one) orders of magnitude higher than those previously measured. A conductivity scaling analysis reveals the Berry connection polarizability as the origin of the anomalous NLMC. Our results pave the way for high-frequency rectifiers with magnetically switchable output polarity as well as for an efficient electrical readout of the magnetic state of antiferromagnetic materials.

15 pages, 4 figures, and supporting information

References in corpus (25)

• Anomalous Hall effect
• Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling
• Electric-field switching of two-dimensional van der Waals magnets
• Observation of the nonlinear Hall effect under time reversal symmetric conditions
• Magnetic Order and Symmetry in the 2D Semiconductor CrSBr
• Field Induced Positional Shift of Bloch Electrons and its Dynamical Implications
• Engineering symmetry breaking in two-dimensional layered materials
• Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure
• Quantum metric-induced nonlinear transport in a topological antiferromagnet
• Intrinsic nonlinear Hall effect in antiferromagnetic tetragonal CuMnAs
• Room temperature nonlinear Hall effect and wireless RF rectification in Weyl semimetal TaIrTe4
• Intrinsic Second-Order Anomalous Hall Effect and Its Application in Compensated Antiferromagnets
• Hidden low-temperature magnetic order revealed through magnetotransport in monolayer CrSBr
• Gate-tuneable and chirality-dependent charge-to-spin conversion in Tellurium nanowires
• Bilinear magneto-electric resistance as a probe of three-dimensional spin texture in topological surface states
• Electrically induced and detected Néel vector reversal in a collinear antiferromagnet
• Unification of Nonlinear Anomalous Hall Effect and Nonreciprocal Magnetoresistance in Metals by the Quantum Geometry
• Electrical magnetochiral effect induced by chiral spin fluctuations
• Strong electrical magneto-chiral anisotropy in tellurium
• Observation of Large Unidirectional Rashba Magnetoresistance in Ge(111)
• Determining the Rashba parameter from the bilinear magnetoresistance response in a two-dimensional electron gas
• Giant magnetochiral anisotropy from quantum confined surface states of topological insulator nanowires
• Anomalous skew-scattering nonlinear Hall effect and chiral photocurrents in {\it PT}-symmetric antiferromagnets
• An antiferromagnetic diode effect in even-layered MnBi2Te4
• Nonvolatile Electric Control of Antiferromagnet CrSBr

Cited by in corpus (4)

• Non-linear Transport in Non-centrosymmetric Systems: From Fundamentals to Applications
• Surface-Dominated Quantum Metric-Induced Nonlinear Transport in the Layered Antiferromagnet CrSBr
• Ferromagnetism above 200 K in organic-ion intercalated CrSBr
• Two-Terminal Electrical Detection of the Néel Vector via Longitudinal Antiferromagnetic Nonreciprocal Transport