Unconventional magnon transport in antiferromagnet NiPS${}_3$ induced by an anisotropic spin-flop transition

Abstract

Nonlocal magnon transport can provide valuable insight into the magnetic properties of magnetic insulators (MIs). A spin-flop transition, a typical magnetic reorientation in antiferromagnets, is expected to affect mag non transport, but studies on this topic are still rare and remain challenging, especially for van der Waals materials. Here we demonstrate the unconventional magnon transport driven by an anisotropic spin-flop transition in the van der Waals antiferromagnet NiPS${}_3$. Examining the nonlocal voltage from thermally driven magnons reveals sharp jumps at certain directions when an inplane magnetic field aligns with the b-axis of NiPS${}_3$, attributed to an in-plane anisotropic spin-flop transition. Furthermore, thermally driven magnon signal exhibits a 1/d${}^2$ decay in thin NiPS${}_3$, evidencing that it is dominated by the intrinsic spin Seebeck effect. Our findings highlight that the electrical detection of magnon currents in a nonlocal device geometry serves as a powerful approach for studying magnetic phase transitions in MIs.

16 pages, 5 figures, and Supporting Information

References in corpus (17)

• Magnetic 2D materials and heterostructures
• Van der Waals heterostructures for spintronics and opto-spintronics
• Magnon transport in quasi-two-dimensional van der Waals antiferromagnets
• Highly Anisotropic Excitons and Multiple Phonon Bound States in a Van der Waals Antiferromagnetic Insulator
• Spin-Induced Linear Polarization of Excitonic Emission in Antiferromagnetic van der Waals Crystals
• Controlling the anisotropy of a van der Waals antiferromagnet with light
• Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
• Isolation and Characterization of Few-layer Manganese Thiophosphite
• Magnetic anisotropy and exchange interactions of two-dimensional FePS${}_3$, NiPS${}_3$ and MnPS${}_3$ from first principles calculations
• Highly sensitive spin-flop transition in antiferromagnetic van-der Waals material MPS3 (M = Ni and Mn)
• Long distance magnon transport in the van der Waals antiferromagnet CrPS${}_4$
• Criteria for accurate determination of the magnon relaxation length from the nonlocal spin Seebeck effect
• Thermally Driven Long Range Magnon Spin Currents in Yttrium Iron Garnet due to Intrinsic Spin Seebeck Effect
• Exceptional sign changes of the non-local spin Seebeck effect in antiferromagnetic hematite
• Observation of three-state nematicity and domain evolution in atomically-thin antiferromagnetic NiPS3
• The spin-flop transition in the quasi two dimensional antiferromagnet MnPS3 detected via thermally generated magnon transport
• Magnon currents excited by the spin Seebeck effect in ferromagnetic EuS thin films