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- W2051127029 abstract "Mn ions play an important role in the properties of LaMnO-based systems. The Mn ions are in the mixed-valence state of the Mn4+ and Mn3+ configurations. Mn4+ consists of three localized d electrons in t orbitals with 2g their spins ferromagnetically coupled and is represented by a spin S = The Mn3+ configuration has an additional localized d electron in one of the e g orbitals to form a total spin S + 1. The e electron hybridizes with conduction g electrons and is assumed to form an orbital singlet as in the two-channel Kondo problem. The orbital singlet is partially broken by a small quadrupolar field that lifts the degeneracy of the e levels. The quadrupolar response is related to the g Jahn-Teller effect and determines the local distribution of Mn-O bond lengths. We study the system in the absence of a magnetic field and in the spin-polarized limit. Both limiting cases yield similar results, suggesting that the quadrupolar susceptibility does not have a strong magnetic field dependence." @default.
- W2051127029 created "2016-06-24" @default.
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- W2051127029 date "1997-12-01" @default.
- W2051127029 modified "2023-10-18" @default.
- W2051127029 title "Quadrupolar response of Mn ions in manganites" @default.
- W2051127029 doi "https://doi.org/10.1080/095008397178878" @default.
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