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Magnetization distribution in the layered colossal magnetoresistance manganite La1.2Sr1.8Mn2O7 from polarized neutron diffraction

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1103/PhysRevB.65.214431
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Affiliation
  1. National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
FormatText, Article
Abstract
In the ferromagnetic metallic state of the colossal magnetoresistive (CMR) manganite La1.2Sr1.8Mn2O7, the spin-density distribution is essentially in agreement with the standard picture in which the unpaired electrons occupy the three t2g orbitals dxy, dyz, and dxz. However we find a small spin density (∼4% of the total Mn spin) on the apical O(2) oxygen atom at both 100 and 220 K, and we suggest that this is due to covalency effects. Surprisingly we find no evidence of spin on the other apical oxygen O(1) suggesting that the Mn eg electron distribution along the c axis is highly anisotropic.
Publication date
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  • Physical Review. B, Condensed Matter and Materials Physics 65, no. 21 (14 June 2002): 214431–.
LanguageEnglish
NPARC number12328044
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Record identifiere4643d9e-cc04-4fb2-90b9-925caf54d23d
Record created2009-09-10
Record modified2020-04-06
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