论文标题
在有机超导体$κ$ - （bedt-ttf）$ _ 2 $ x中，由于$ d $ - 波 - 债券订单而导致的伪模的预测
Prediction of pseudogap formation due to $d$-wave bond-order in organic superconductor $κ$-(BEDT-TTF)$_2$X
论文作者
论文摘要
富含伪群形成的隐藏的非常规命令，例如地点键 - 订单（BO），引起了浓缩物理学的越来越多的关注。在这里，我们研究了有机非常规超导体$κ$ - （BEDT-TTF）$ _ 2 $ x中的隐藏订单组。我们基于功能恢复量规定组（FRG）和密度波方程理论，预测波长$ q = q_b =（δ，δ）$（$δ=0.38π$）的$ d $ - 波bo的形成。 BO的起源是抗磁性自旋波动之间的量子干扰。这种预测导致NMR $ 1/T_1 $放松率和状态密度的明显降低，并与基本的实验报告保持一致。本理论将适用于其他与伪群形成的其他强相关金属。
Rich hidden unconventional orders with pseudogap formation, such as the inter-site bond-order (BO), attract increasing attention in condensed matter physics. Here, we investigate the hidden order formation in organic unconventional superconductor $κ$-(BEDT-TTF)$_2$X. We predict the formation of $d$-wave BO at wavelength $q=Q_B=(δ,δ)$ ($δ=0.38π$) for the first time, based on both the functional renormalization group (fRG) and the density-wave equation theories. The origin of the BO is the quantum interference among antiferromagnetic spin fluctuations. This prediction leads to distinct pseudogap-like reduction in the NMR $1/T_1$ relaxation rate and in the density-of-states, consistently with essential experimental reports. The present theory would be applicable for other strongly correlated metals with pseudogap formation.
