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Loop currents in ladder cuprates: A dynamical mean field theory study
Physical Review B ( IF 3.2 ) Pub Date : 2020-08-18 , DOI: 10.1103/physrevb.102.085135
Xiancong Lu , D. Sénéchal

We investigate the possibility of spontaneous loop currents in the two-leg ladder cuprate Sr14xCaxCu24O41 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 Ud and of the Cu-O energy difference Epd, 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.

中文翻译:

梯形铜酸盐中的回路电流:动力学平均场理论研究

我们研究了两腿梯形铜酸盐中自发回路电流的可能性 r14-XX24Ø41通过将簇动态平均场理论(CDMFT)应用于该化合物的七波段Hubbard模型,并使用精确的对角化求解器。我们采样了几个局部交互的值üd 和Cu-O能量差 Ëpd通过施加感应环路电流的外部磁场。一旦外部磁场变为零,我们就不会发现自发环路电流的情况。
更新日期:2020-08-19
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