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arXiv 0912.3676cond-mat.str-el
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一维强关联电子与局域伊辛矩的相互作用

Interplay of strongly correlated electrons and localized Ising moments in one-dimension

Chisa Hotta

摘要:

研究了一维四分之一填充强关联电子链与另一反铁磁伊辛矩链通过$J$耦合后的基态性质。我们专注于大库仑相互作用本地化的情况下,每隔一个网站上的电荷。电子自旋和伊辛矩在每个链中分别通过$J_{\rm eff}$和$J'$反铁磁相互作用。由于电子数是伊辛矩的一半,这两条链的磁关联周期是不相称的。当$J$存在时,体系中$J_{\rm eff}$和$J'$的阻挫作用会产生,这可能导致体系产生有趣的磁电效应。

英文摘要:

We study the ground state properties of the one-dimensional quarter-filled strongly correlated electronic chain coupled by $J$ to another chain of antiferromagnetic Ising moments. We focus on the case where the large Coulomb interactions localize the charges on every other site. Both the electronic spins and the Ising moments interact antiferromagnetically within each chain by $J_{\rm eff}$ and $J'$, respectively. Since the number of electrons is half as that of the Ising moments the period of magnetic correlation of these two chains are incommensurate. In the presence of $J$, the frustration of $J_{\rm eff}$ and $J'$ arises, which may lead the system to the intriguing magneto-electric effect.

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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