Charge Ordering Due to Antiferromagnetic Correlation in Quarter-Filled Manganites |
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| Authors: | WANG Hai-Long TIAN Guang-Shan LIN Hai-Qing |
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| Affiliation: | 1. School of Physics, Peking University, Beijing 100871, China ;2. Department of Physics, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China |
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| Abstract: | In the present paper, we study the zero-temperature phase diagram of thedoped perovskite manganites at filling $x=0.5$ by the real-spaceHartree-Fock approximation method. Our purpose is to resolvea controversial issue arising recently on the origin of the chargeordered phases in these systems. We find that the antiferromagneticsuperexchange interaction between the localized spins plays the central rolein producing the concerned phases. Our results confirmsome speculations on this issue. |
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| Keywords: | manganites charge ordered phases antiferromagnetic correlation |
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