论文标题
梯子中的环电流：动态平均场理论研究
Loop currents in ladder cuprates: A dynamical mean field theory study
论文作者
论文摘要
我们研究了在两腿梯子cuprate sr $ _ {14-x} $ ca $ _x $ _x $ _x $ _ {24} $ o $ $ _ {41} $中，通过将群集群集均值（cdmmft）应用于七型频道的hubbard模型，将与七个型号的模型应用于二合一的杂物，并与确切的二元组相处。我们通过应用诱导环电流的外部字段来对本地交互$ u_d $和Cu-O能量差$ e_ {pd} $进行几个值。一旦将外部场提高到零，我们就不会发现自发环电流的实例。
We investigate the possibility of spontaneous loop currents in the two-leg ladder cuprate Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$ by applying cluster dynamical mean field theory (CDMFT) to a seven-band Hubbard model for that compound, with an exact diagonalization solver. We sample several values of the local interaction $U_d$ and of the Cu-O energy difference $E_{pd}$, by applying an external field that induces loop currents. We find no instance of spontaneous loop currents once the external field is brought to zero.
