Spin nematic states in spin-1 antiferromagnets with easy-axis anisotropy

TL;DR

This paper demonstrates that non-frustrated spin-1 antiferromagnets with easy-axis anisotropy can exhibit spin nematic phases in strong magnetic fields across one, two, and three dimensions, supported by analytical and numerical results.

Contribution

It reveals the emergence of spin nematic phases in non-frustrated spin-1 antiferromagnets with easy-axis anisotropy, expanding understanding beyond frustrated systems.

Findings

Nematic phases appear in 1D, 2D, and 3D antiferromagnets with easy-axis anisotropy.

Analytical results for 1D are supported by numerical simulations.

Spin nematic states can occur without frustration or exotic interactions.

Abstract

It is well known that spin nematic phases can appear in either frustrated magnets or in those described by Hamiltonians with large exotic non-Heisenberg terms like biquadratic exchange. We show in the present study that non-frustrated spin-1 1D, 2D and 3D antiferromagnets with single-ion easy-axis anisotropy can show nematic phases in strong magnetic field. For 1D case we support our analytical results by numerical ones.