论文标题
曲线和相关电子系统中的横向自旋波动介导的奇数自旋环流顺序
Odd-parity spin-loop-current order mediated by transverse spin fluctuations in cuprates and related electron systems
论文作者
论文摘要
由于非平凡的阶参数而引起的非常规的破坏对称性现象引起了越来越多的相关电子系统的关注。在这里，我们从理论上预测纳米级自发性自旋流动的发生，称为旋转环（SLC）阶，是铜酸盐中伪PSEUDOGAP和电子nematicities的有前途的起源。我们揭示了SLC是由奇数电子孔凝结驱动的，这些冷凝是由pseudoGap温度周围$ t^*$周围的横向自旋波动介导的。在相同的温度下，发生奇数镁对缩合。 SLC顺序是“隐藏的”，即既不诱导内部磁场和电荷密度调制，而具有有限波数的预测SLC自然会产生费米电弧结构。此外，SLC订单的波动可作为相邻热点之间有吸引力的配对相互作用，从而扩大了D波超导过渡温度$ T_C $。 SLC状态将是理解伪群，电子nematicitions以及Cuprates和其他强相关金属的超导性的关键要素。
Unconventional symmetry-breaking phenomena due to nontrivial order parameters attract increasing attention in strongly correlated electron systems. Here, we predict theoretically the occurrence of nanoscale spontaneous spin-current, called the spin loop-current (sLC) order, as a promising origin of the pseudogap and electronic nematicity in cuprates. We reveal that the sLC is driven by the odd-parity electron-hole condensation that are mediated by transverse spin fluctuations around the pseudogap temperature $T^*$. At the same temperature, odd-parity magnon pair condensation occurs. The sLC order is "hidden" in that neither internal magnetic field nor charge density modulation is induced, whereas the predicted sLC with finite wavenumber naturally gives the Fermi arc structure. In addition, the fluctuations of sLC order work as attractive pairing interaction between adjacent hot spots, which enlarges the d-wave superconducting transition temperature $T_c$. The sLC state will be a key ingredient in understanding the pseudogap, electronic nematicity as well as superconductivity in cuprates and other strongly correlated metals.
