We derive the effective action for superconducting fluctuations in a four-band model for pnictides, discussing the emergence of a single critical mode out of a dominant interband pairing mechanism. We then apply our model to calculate the paraconductivity in two-dimensional and layered three-dimensional systems and compare our results with recent resistivity measurements in SmFeAsO0.8 F0.2. © 2009 The American Physical Society.
Theory of fluctuation conductivity from interband pairing in pnictide superconductors / Fanfarillo, L.; Benfatto, L.; Caprara, S.; Castellani, C.; Grilli, M.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 79:17(2009), pp. 1-4. [10.1103/PhysRevB.79.172508]
Theory of fluctuation conductivity from interband pairing in pnictide superconductors
Fanfarillo L.;
2009-01-01
Abstract
We derive the effective action for superconducting fluctuations in a four-band model for pnictides, discussing the emergence of a single critical mode out of a dominant interband pairing mechanism. We then apply our model to calculate the paraconductivity in two-dimensional and layered three-dimensional systems and compare our results with recent resistivity measurements in SmFeAsO0.8 F0.2. © 2009 The American Physical Society.| File | Dimensione | Formato | |
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