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

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

2009-12-18

arxiv.org/abs/0912.3676v1

Physics

Condensed Matter

Strongly Correlated Electrons

8pages 6figures

Scientific paper

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.

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