论文标题
非共线性抗铁磁铁中的自旋超流体
Spin superfluidity in noncollinear antiferromagnets
论文作者
论文摘要
我们探讨了以三个公共抗fiferromagnets为主的自旋超流体传输。长波长制度中的系统由$ SO（3）$不变的场理论描述。 Dzyaloshinskii-Moriya相互作用或各向异性的其他校正可能破坏对称性。但是，该系统仍然容纳$ U（1）$ - 旋转对称性。因此，在非局部测量设置中鉴定出旋转超流体的幂律空间衰减特征，其中自旋注射由广义自旋电导描述。我们建议铁矿石作为实现我们的提议的有前途的材料候选者。
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.
