Jahn–Teller effect and superexchange in half-doped manganites
نویسندگان
چکیده
منابع مشابه
Jahn-Teller Effect and Superexchange in Half-Doped Manganites
We investigate the stability of the charge exchange (CE) phase within a microscopic model which describes a single plane as in La0.5Sr1.5MnO4. The model includes Coulomb interactions (on-site and intersite), the Jahn-Teller term and the superexchange interactions due to eg and t2g electrons. By investigating the phase diagram at T = 0 in mean-field approximation we conclude that the superexchan...
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The stability of the charge-stacked structure vis-à-vis the charge-alternate structure in the half-doped manganites is studied with a model that includes electronic kinetic energy, onsite and intersite Coulomb interactions, the Jahn–Teller energy, and the antiferromagnetic superexchange between the manganese core spins. It is shown that for a single zigzag chain, the electronic kinetic energy s...
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ژورنال
عنوان ژورنال: physica status solidi (b)
سال: 2003
ISSN: 0370-1972,1521-3951
DOI: 10.1002/pssb.200301684