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Polaron coherence as origin of the pseudogap phase in high temperature superconducting cuprates


Bussmann-Holder, A; Keller, H; Bishop, A R; Simon, A; Müller, K A (2008). Polaron coherence as origin of the pseudogap phase in high temperature superconducting cuprates. Journal of Superconductivity and Novel Magnetism, 21(6):353-357.

Abstract

Within a two-component approach to high T c copper oxides including polaronic couplings, we identify the pseudogap phase as the onset of polaron ordering. This ordering persists in the superconducting phase. A huge isotope effect on the pseudogap onset temperature T * is predicted and in agreement with experimental data. The anomalous temperature dependence of the mean square copper–oxygen ion displacement observed above, at and below T c , stems from an s-wave superconducting component of the order parameter, whereas a pure d-wave order parameter alone can be excluded.

Abstract

Within a two-component approach to high T c copper oxides including polaronic couplings, we identify the pseudogap phase as the onset of polaron ordering. This ordering persists in the superconducting phase. A huge isotope effect on the pseudogap onset temperature T * is predicted and in agreement with experimental data. The anomalous temperature dependence of the mean square copper–oxygen ion displacement observed above, at and below T c , stems from an s-wave superconducting component of the order parameter, whereas a pure d-wave order parameter alone can be excluded.

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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:2008
Deposited On:18 Feb 2009 09:36
Last Modified:21 Nov 2017 13:58
Publisher:Springer
ISSN:1557-1939
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:https://doi.org/10.1007/s10948-008-0350-z

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