Research Papers in Physics and Astronomy

 

Date of this Version

2021

Document Type

Article

Citation

Phys. Rev. B 103, L060406 (2021)

Comments

https://doi.org/10.1103/PhysRevB.103.L060406

Abstract

We explore the spin superfluid transport in exchange interaction-dominated three-sublattice antiferromagnets. The system in the long-wavelength regime is described by an SO(3) invariant field theory. Additional corrections from Dzyaloshinskii-Moriya interactions or anisotropies can break the symmetry; however, the system still approximately holds a U(1)-rotation symmetry. Thus, the power-law spatial decay signature of spin superfluidity is identified in a nonlocal-measurement setup where the spin injection is described by the generalized spin-mixing conductance. We suggest iron jarosites as promising material candidates for realizing our proposal.

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