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Proceedings Paper

Complexity in transition metal oxides
Author(s): Gonzalo Alvarez; Adriana Moreo; Elbio Dagotto
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Paper Abstract

The competition of antiferromagnetic and d-wave superconductivity order parameters in cuprates is studied within a phenomenological model. An unbiased numerical analysis is carried out. The results suggest that the transition from the antiferromagnetic to the superconducting region is not universal. When disorder is present, a glassy state forms leading to the possibility of "colossal" effects in some cuprates, analog of those in other transition metal oxides, in particular manganites. Non-superconducting Cu-oxides could rapidly become superconducting by the influence of weak perturbations. Consequences of this mechanism for thin-film and angle-resolved photoemission experiments are discussed. In addition, a recent study of the strong-coupling region in d-wave superconductors with a numerically exact technique is briefly reviewed.

Paper Details

Date Published: 30 August 2005
PDF: 15 pages
Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59320F (30 August 2005); doi: 10.1117/12.624870
Show Author Affiliations
Gonzalo Alvarez, Oak Ridge National Lab. (United States)
Adriana Moreo, Oak Ridge National Lab. (United States)
Univ. of Tennessee, Knoxville (United States)
Elbio Dagotto, Oak Ridge National Lab. (United States)
Univ. of Tennessee, Knoxville (United States)


Published in SPIE Proceedings Vol. 5932:
Strongly Correlated Electron Materials: Physics and Nanoengineering
Ivan Bozovic; Davor Pavuna, Editor(s)

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