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Identifying the Pairing Mechanism in Fe-As Based Superconductors: Gaps and Isotope Effects

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Bussmann-Holder,  A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Simon,  A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Bussmann-Holder, A., Simon, A., Keller, H., & Bishop, A. R. (2011). Identifying the Pairing Mechanism in Fe-As Based Superconductors: Gaps and Isotope Effects. Journal of Superconductivity and Novel Magnetism, 24(1-2), 1099-1103.


Cite as: https://hdl.handle.net/21.11116/0000-000E-C0C5-A
Abstract
The temperature dependencies of the coupled superconducting gaps, observed in Fe-As based superconducting compounds is calculated and a universal temperature scaling observed which is only present if the coupled order parameters both have s-wave symmetry. Predictions for possible isotope effects on the superconducting transition temperature T (c) are made if phonons are involved in the pairing or polaronic effects are of importance. Comparison to experimental data is given where these are available.