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Doped Spin Ladder: Zhang-Rice Singlets or Rung-centred Holes? | | Krzysztof Wohlfeld
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17 Jan 2007 | | Subject: | Strongly Correlated Electrons; Superconductivity | | Abstract: | We formulate charge transfer model for a single doped spin ladder, relevant for the intrinsically doped plane of coupled spin ladders in Sr$_{3}$Ca$_{11}$Cu$_{24}$O$_{41}$. Assuming the presence of the experimentally observed charge order in the system we solve the model using Hartree-Fock approximation. Our results show the profound stability of the Zhang-Rice singlets with respect to other configurations of doped holes, in agreement with recent x-ray absorption measurements. | | Source: | arXiv, cond-mat/0701418 | | Services: | Forum | Review | PDF | Favorites | |
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