The local Jahn-Teller effect in (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1}

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Description

Lattice polarons form an important constituent in the mechanism of magnetism and transport of the (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1} (for n = 2 and {infinity}) colossal magnetoresistance manganites. The coupling of the polaronic distortions to the local Jahn-Teller (JT) effect has been characterized by the pulsed neutron pair density function (PDF) analysis. Distortions of equal magnitude to the ones found in perovskites arising from a JT effect are found in the 2-dimensional layer crystals. The coupling of the distortions to the lattice is similar in both systems suggesting that lattice polarons are formed independently to the crystal dimensionality.

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8 p.

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Louca, D.; Kwei, G.H. & Egami, T. December 31, 1998.

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Description

Lattice polarons form an important constituent in the mechanism of magnetism and transport of the (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1} (for n = 2 and {infinity}) colossal magnetoresistance manganites. The coupling of the polaronic distortions to the local Jahn-Teller (JT) effect has been characterized by the pulsed neutron pair density function (PDF) analysis. Distortions of equal magnitude to the ones found in perovskites arising from a JT effect are found in the 2-dimensional layer crystals. The coupling of the distortions to the lattice is similar in both systems suggesting that lattice polarons are formed independently to the crystal dimensionality.

Physical Description

8 p.

Notes

INIS; OSTI as DE99001258

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  • Euroconference on polarons: condensation, pairing, magnetism, Erice (Italy), 9-17 Jun 1998

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  • Other: DE99001258
  • Report No.: LA-UR--98-2537
  • Report No.: CONF-9806129--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/304020 | External Link
  • Office of Scientific & Technical Information Report Number: 304020
  • Archival Resource Key: ark:/67531/metadc677320

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  • December 31, 1998

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  • July 25, 2015, 2:20 a.m.

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  • May 5, 2016, 6:29 p.m.

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Louca, D.; Kwei, G.H. & Egami, T. The local Jahn-Teller effect in (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1}, report, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc677320/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.