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  Ferroelectricity and superconductivity: competing or cooperating phenomena

Bussmann-Holder, A., Simon, A., & Bishop, A. R. (2011). Ferroelectricity and superconductivity: competing or cooperating phenomena. Zeitschrift für Kristallographie, 226(2), 177-185.

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 Creators:
Bussmann-Holder, A.1, 2, 3, 4, Author           
Simon, A.1, Author           
Bishop, A. R., Author
Affiliations:
1Former Departments, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370502              
2Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370479              
3Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370483              
4Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370482              

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Free keywords: Ferroelectricity; Superconductivity; Electron-lattice interactions
 Abstract: The discovery of high temperature superconductivity in layered systems has evoked a heated discussion about the microscopic electron (hole) pairing mechanism. In particular, the proximity of these systems to magnetic phases has been taken as evidence for a purely electronic mechanism. However, structural anomalies and unconventional isotope effects suggest that the lattice plays a crucial role and must be incorporated in modeling the mechanism. Here we show that polarizability effects and Jahn-Teller centers are of special importance, since these enable dynamical charge transfer, interband interactions, polaron and bipolaron formation. In this respect the layered superconductors approach ferroelectrics, where dynamical covalency is known to trigger the structural instability.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 581353
ISI: 000288102900012
 Degree: -

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Title: Zeitschrift für Kristallographie
  Alternative Title : Z. Kristall.
Source Genre: Journal
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Publ. Info: MUNICH : OLDENBOURG VERLAG
Pages: - Volume / Issue: 226 (2) Sequence Number: - Start / End Page: 177 - 185 Identifier: ISSN: 0044-2968