Complexity in high-temperature superconductors

G. Alvarez; A. Moreo; E. Dagotto

doi:10.1063/1.2199428

Complexity in high-temperature superconductors

G. Alvarez, A. Moreo, E. Dagotto

Computational Chemistry and Nanomaterial

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A spin-fermion and Landau-Ginzburg model for high-temperature superconductors are formulated and analyzed with unbiased numerical techniques. A study of the competition between d -wave superconductivity and antiferromagnetism in the clean limit suggests that the phase diagram is not universal. When chemical disorder is considered, a "clustered state" with short-range order but without long-range order appears, leading to the possibility of a giant proximity effect. The influence of disorder on the spectral function is also addressed, and results are compared to available-angle resolved photoemission data for cuprates.

Original language	English
Article number	003604LTP
Pages (from-to)	290-297
Number of pages	8
Journal	Low Temperature Physics
Volume	32
Issue number	4
DOIs	https://doi.org/10.1063/1.2199428
State	Published - Apr 2006

Funding

The Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract DE-AC05-00OR22725. A.M. and E.D. are supported by NSF grant DMR-0312333.

Funders	Funder number
National Science Foundation	DMR-0312333
U.S. Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory

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AB - A spin-fermion and Landau-Ginzburg model for high-temperature superconductors are formulated and analyzed with unbiased numerical techniques. A study of the competition between d -wave superconductivity and antiferromagnetism in the clean limit suggests that the phase diagram is not universal. When chemical disorder is considered, a "clustered state" with short-range order but without long-range order appears, leading to the possibility of a giant proximity effect. The influence of disorder on the spectral function is also addressed, and results are compared to available-angle resolved photoemission data for cuprates.

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Complexity in high-temperature superconductors

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Funding

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