论文标题
反铁磁铁中非自旋轨道耦合的非线性非逆转录转运
Nonlinear nonreciprocal transport in antiferromagnets free from spin-orbit coupling
论文作者
论文摘要
从理论上讲，我们提出了在反铁磁铁中实现非线性非偏置转运的实现，而无需依赖相对论的自旋轨道耦合。通过对称和显微镜模型分析，我们表明，局部自旋标量性手性诱导不对称带调制成为Drude型非线性传输的来源，而在三角形单元中的共线旋转构型引起的电动极化导致了浆果曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 曲线 - 甲壳化型非线性运输。我们证明，在三角形晶格上的120 $^\ circ $抗铁磁有序和外部磁场中的呼吸kagome晶格是典型的例子。我们的结果打开了设计和工程功能材料的新方向，并通过自发的磁相跃迁显示了丰富的平等侵入运输现象。
We theoretically propose a realization of a nonlinear nonreciprocal transport in antiferromagnets without relying on the relativistic spin-orbit coupling. Through the symmetry and microscopic model analyses, we show that a local spin scalar chirality to induce an asymmetric band modulation becomes a source of a Drude-type nonlinear transport, while an electric polarization induced by a collinear spin configuration in a triangle unit leads to a Berry-curvature-dipole-type nonlinear transport. We demonstrate that 120$^\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.
