t-J model of coupled Cu$_2$O$_5$ ladders in Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$

Starting from the proper charge transfer model for Cu $_{2}$ O $_{5}$ coupled ladders in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$ we derive the low energy Hamiltonian for this system. It occurs that the widely used ladder t-J model is not sufficient and has to be supplemented by the Coulomb repulsion term between holes in the neighboring ladders. Furthermore, we show how a simple mean-field solution of the derived t-J model may explain the onset of the charge density wave with the odd period in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$ .

t-J model of coupled Cu $_{2}$ O $_{5}$ ladders in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$

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t-J model of coupled Cu $_{2}$ O $_{5}$ ladders in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$

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t-J model of coupled Cu22​O55​ ladders in Sr14−x14−x​Caxx​Cu2424​O4141​

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t-J model of coupled Cu22​O55​ ladders in Sr14−x14−x​Caxx​Cu2424​O4141​

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t-J model of coupled Cu $_{2}$ O $_{5}$ ladders in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$

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AI智能校验

t-J model of coupled Cu $_{2}$ O $_{5}$ ladders in Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$

讲解博客

AI智能校验