Complexity in transition metal oxides

Gonzalo Alvarez; Adriana Moreo; Elbio Dagotto

doi:10.1117/12.624870

Complexity in transition metal oxides

Gonzalo Alvarez, Adriana Moreo, Elbio Dagotto

Computational Chemistry and Nanomaterial

Research output: Contribution to journal › Conference article › peer-review

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.

Original language	English
Article number	59320F
Pages (from-to)	1-15
Number of pages	15
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5932
DOIs	https://doi.org/10.1117/12.624870
State	Published - 2005
Event	Strongly Correlated Electron Materials: Physics and Nanoengineering - San Diego, CA, United States Duration: Jul 31 2005 → Aug 4 2005

Funding

Work supported by NSF grants DMR 0122523 and 0312333.

Funders	Funder number
National Science Foundation	0312333, DMR 0122523

Keywords

Clustered states
D-wave
Pseudo-gap
Superconductors

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10.1117/12.624870

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T1 - Complexity in transition metal oxides

AU - Alvarez, Gonzalo

AU - Moreo, Adriana

AU - Dagotto, Elbio

PY - 2005

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N2 - 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.

AB - 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.

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KW - Pseudo-gap

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Complexity in transition metal oxides

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