论文标题
量子关键sr $ _3 $ ru $ _2 $ o $ $ _7 $中的竞争磁性订单
Competing magnetic orders in quantum critical Sr$_3$Ru$_2$O$_7$
论文作者
论文摘要
我们调查了SR $ _3 $ ru $ _2 $ o $ _7 $，一种量子关键金属，通过密度功能计算，显示了元磁量子相变和电子源性。与实验观察到的顺磁性相比，这些预测的铁磁基态与可能抑制磁性的磁性波动的问题相反。我们进行了搜索以识别如此低的能量抗铁磁性的亚稳态状态。我们发现最低的能量抗铁磁状态具有条纹顺序。这对应于已显示由MN合金诱导的E型顺序。我们还注意到，在此E型有序状态下，大量的运输各向异性。这些结果与实验观察有关。
We investigated Sr$_3$Ru$_2$O$_7$, a quantum critical metal that shows a metamagnetic quantum phase transition and electronic nematicity, through density functional calculations. These predict a ferromagnetic ground state in contrast to the experimentally observed paramagnetism, raising the question of competing magnetic states and associated fluctuations that may suppress magnetic order. We did a search to identify such low energy antiferromagnetically ordered metastable states. We find that the lowest energy antiferromagnetic state has a striped order. This corresponds to the E-type order that has been shown to be induced by Mn alloying. We also note significant transport anisotropy in this E-type ordered state. These results are discussed in relation to experimental observations.
