We study spin transport on the anisotropic antiferromagnetic checkerboard lattice with a Dzyaloshinskii-Morya interaction. The dynamical spin conductivity is calculated using a Kubo formula. The Drude weight is also calculated as a function of temperature. The Drude weight vanishes at T = 0, but is finite for T > 0. A finite Drude weight indicates an ideal conductor, which we refer to as ballistic transport.

中文翻译：

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海森堡反铁磁棋盘格的自旋电导率

我们研究了具有Dzyaloshinskii-Morya相互作用的各向异性反铁磁棋盘格上的自旋输运。使用久保公式计算动态自旋电导率。德鲁德重量也作为温度的函数进行计算。Drude重量在T  = 0时消失，但对于T  > 0来说是有限的。有限的Drude重量表示理想导体，我们将其称为弹道运输。