Signature of BKT-like spin transport in a quasi-2D antiferromagnet BaNiVO
arXiv:2312.15615 · doi:10.1103/PhysRevMaterials.9.L011401
Abstract
In two-dimensional (2D) spin systems, the augmentation of spin fluctuations gives rise to quasi-long-range order; however, how they manifest in spin transport remains unclear. Here we investigate the spin Seebeck effect (SSE) in a quasi-2D antiferromagnet, BaNiVO, which has been reported to exhibit the Berezinskii-Kosterlitz-Thouless (BKT) transition owing to its distinct 2D nature. We found that the SSE in Pt / BaNiVO persists well above the Néel temperature, significantly different from the behavior of 3D ordered magnets. Our numerical analysis for a 2D microscopic spin model supports the hypothesis that the observed SSE is linked to strong magnetic correlations in the BKT-like phase.
Main text: 15 pages, 4 figures, Supplementary: 12 pages
References in corpus (21)
- Intrinsic 2D-XY ferromagnetism in a van der Waals monolayer
- Observation of spin current in quantum spin liquid
- Tricritical behavior of two-dimensional intrinsic ferromagnetic semiconducting CrGeTe3
- Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
- Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect at High Temperatures
- Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids
- Field-induced XY behavior in the S=1/2 antiferromagnet on the square lattice
- Spin Seebeck Effect near the Antiferromagnetic Spin-Flop Transition
- Direct Evidence of the Discontinuous Character of the Kosterlitz-Thouless Jump
- Observation of Vector Spin Seebeck Effect in a Noncollinear Antiferromagnet
- Correlations, spin dynamics, defects: the highly-frustrated Kagomé bilayer
- Ultrafast optical excitation of magnetic dynamics in van der Waals magnets: Coherent magnons and BKT dynamics in NiPS
- Temperature dependence of the interface spin Seebeck effect
- Triplon current generation in solids
- Investigation of the spin-1 honeycomb antiferromagnet BaNiVO with easy plane anisotropy
- Mechanism of paramagnetic spin Seebeck effect
- Antiferromagnetic spin Seebeck effect across the spin-flop transition: A stochastic Ginzburg-Landau simulation
- Spin Seebeck effect in quantum magnet Pb2V3O9
- Transport signature of the magnetic Berezinskii-Kosterlitz-Thouless transition
- Microscopic theory of spin Seebeck effect in antiferromagnets
- Signatures for Berezinsky-Kosterlitz-Thouless critical behaviour in the planar antiferromagnet BaNiVO