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arXiv 1901.05643cond-mat.str-el
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掺杂Kondo链中的电荷密度波

Charge Density Wave in a Doped Kondo Chain

Yixuan Huang, D. N. Sheng, C. S. Ting

摘要:

本文报道了一维Kondo晶格模型的基态在填充n=0.75时在弱耦合区存在电荷密度波。CDW由局域自旋介导的有效库仑排斥驱动。基于密度矩阵重整化群方法的数值计算结果,我们发现CDW相出现在Tomonaga-Luttinger液体的顺磁区域.该相的出现是在没有排斥作用的情况下诱导CDW相的一个例子,丰富了一维近藤晶格模型的相图。

英文摘要:

We report the existence of the charge density wave (CDW) in the ground state of 1D Kondo lattice model at the filling of n=0.75 in the weak coupling region. The CDW is driven by the effective Coulomb repulsion mediated by the localized spins. Based on our numerical results using the density matrix renormalization group method, we show that the CDW phase appears in the paramagnetic region previously known as the Tomonaga-Luttinger liquid. The emergence of this phase serves as an example of CDW phase induced without bare repulsive interactions, and enriches the phase diagram of the 1D Kondo lattice model.

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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