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Title: Evidence for symmetry breaking local distortions in thallium barium copper oxide

Conference ·
OSTI ID:10129914

Extended x-ray absorption fine structure (EXAFS) show local structural anomalies in Tl{sub 2}Ba{sub 2}CuO{sub 6}, which reduce the crystal symmetry; this symmetry lowering is interpreted as an indication of the existence of localized states. A local structural model consistent with the EXAFS results consists of a fraction of the O(1) sites displaced from the midpoint of the Cu-Cu bond, and dimpling of the CuO{sub 2} planes when the O(1) site is not displaced from this midpoint.

Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
10129914
Report Number(s):
LA-UR-94-343; CONF-931247-9; ON: DE94006149
Resource Relation:
Conference: Strongly correlated electronic materials,Los Alamos, NM (United States),15-18 Dec 1993; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English

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