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arXiv 1402.6311cond-mat.str-el
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正方格点上t-J-V模型键序不稳定性的非线性玻色子和DMFT研究

Auxiliary-boson and DMFT studies of bond ordering instabilities of t-J-V models on the square lattice

Andrea Allais, Johannes Bauer, Subir Sachdev

摘要:

我们研究了强现场库仑相互作用的影响,对不稳定性的金属状态的正方形晶格上的一般形式的键序。莫特关联占的非线性玻色子方法,并通过动力学平均场论计算,补充我们最近的工作(arXiv:1402.4807)使用Gutzwiller投影变分波函数。通过本文的方法,我们发现在位Mott关联并没有显著改变保持时间反演对称性的键序不稳定性的结构,但它们确实增强了向时间反演对称性破缺的“交错通量”态的不稳定性。

英文摘要:

We examine the influence of strong on-site Coulomb interactions on instabilities of the metallic state on the square lattice to general forms of bond order. The Mott correlations are accounted for by the auxiliary-boson method, and by dynamical mean field theory calculations, complementing our recent work (arXiv:1402.4807) using Gutzwiller projected variational wavefunctions. By the present methods, we find that the on-site Mott correlations do not significantly modify the structure of the bond ordering instabilities which preserve time-reversal symmetry, but they do enhance the instability towards time-reversal symmetry breaking "staggered flux" states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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