Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling

Abstract

We theoretically propose a realization of a nonlinear nonreciprocal transport in antiferromagnets without relying on the relativistic spin-orbit coupling. Through the symmetry and microscopic model analyses, we show that a local spin scalar chirality to induce an asymmetric band modulation becomes a source of a Drude-type nonlinear transport, while an electric polarization induced by a collinear spin configuration in a triangle unit leads to a Berry-curvature-dipole-type nonlinear transport. We demonstrate that 120${}^{\circ }$ antiferromagnetic ordering on a triangular lattice and a breathing kagome lattice in an external magnetic field are typical examples. Our results open a new direction of designing and engineering functional materials with showing rich parity-violating transport phenomena by spontaneous magnetic phase transitions.

7 pages, 4 figures, accepted for publication in PRB

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Cited by in corpus (6)

• Nonreciprocal Transport in Noncoplanar Magnetic Systems without Spin-Orbit Coupling, Net Scalar Chirality, or Magnetization
• Ferroaxial moment induced by vortex spin texture
• Skyrmion and vortex crystals in the Hubbard model
• Nonrelativistic Functional Properties in Collinear Antiferromagnets Based on Multipole Representation Theory
• Field-tunable quadruple-$Q$ states driven by momentum-space frustration
• Riemannian geometric classification and emergent phenomena of magnetic textures