Published 1998 | Version v1
Report Restricted

The local Jahn-Teller effect in (La/Sr)n+1MnnO3n+1

Creators

  • 1. Los Alamos National Lab., NM (United States)
  • 2. Univ. of Pennsylvania, Philadelphia, PA (United States)

Description

Lattice polarons form an important constituent in the mechanism of magnetism and transport of the (La/Sr)n+1MnnO3n+1 (for n = 2 and ∞) 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

Availability note (English)

Available from INIS in electronic form; ALSO AVAILABLE FROM OSTIAS DE99001258; NTIS;US GOVT. PRINTING OFFICE DEP.

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Additional details

Publishing Information

Imprint Pagination
11 p.
Report number
LA-UR--98-2537

Conference

Title
condensation, pairing, magnetism
Acronym
Euroconference on polarons
Dates
9-17 Jun 1998
Place
Erice (Italy)

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
30031853
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
EXPERIMENTAL DATA; JAHN-TELLER EFFECT; LANTHANUM OXIDES; MANGANESE OXIDES; MOLECULAR STRUCTURE; NEUTRON DIFFRACTION; POLARONS; STRONTIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DATA; DIFFRACTION; INFORMATION; LANTHANUM COMPOUNDS; MANGANESE COMPOUNDS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SCATTERING; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Contract/Grant/Project number
Contract W-7405-ENG-36
Funding organization
USDOE Assistant Secretary for Management and Administration, Washington, DC (United States)
Secondary number(s)
CONF-9806129--