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Superconductivity in Fe and As based compounds: A bridge between MgB2 and cuprates


Bussmann-Holder, A; Simon, A; Keller, H; Bishop, A R (2010). Superconductivity in Fe and As based compounds: A bridge between MgB2 and cuprates. Journal of Superconductivity and Novel Magnetism, 23(3):365-369.

Abstract

By interpreting various experimental data for the new high temperature FeAs type superconductors in terms of lattice mediated multigap superconductivity, it is shown that these systems strongly resemble MgB2, however, with the distinction that local polaronic lattice effects exist. This fact establishes a connection to cuprate high temperature superconductors where polaron formation is essential for the pseudogap phase and the unconventional isotope effects observed there. However, similarly to MgB2 and in contrast to cuprates, the two superconducting gaps in the Fe-As based materials are isotropic s-wave gaps.

Abstract

By interpreting various experimental data for the new high temperature FeAs type superconductors in terms of lattice mediated multigap superconductivity, it is shown that these systems strongly resemble MgB2, however, with the distinction that local polaronic lattice effects exist. This fact establishes a connection to cuprate high temperature superconductors where polaron formation is essential for the pseudogap phase and the unconventional isotope effects observed there. However, similarly to MgB2 and in contrast to cuprates, the two superconducting gaps in the Fe-As based materials are isotropic s-wave gaps.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:1 April 2010
Deposited On:28 Jan 2010 14:33
Last Modified:17 Feb 2018 16:53
Publisher:Springer
ISSN:1557-1939
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1007/s10948-009-0586-2
Related URLs:http://arxiv.org/abs/0906.2286

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