caa a22 4500 445382937 CHVBK 20180317143023.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-010-1119-8 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1119-8 Pseudogap Analysis of Normal State Transport Behavior of 11 and 1111 Fe-Based Superconductors [Elektronische Daten] [I. Pallecchi, M. Tropeano, C. Ferdeghini, G. Lamura, A. Martinelli, A. Palenzona, M. Putti] In this paper we analyze transport data of different families of Fe-based superconductors, within a pseudogap framework. The Fe(Te, Se) samples exhibit s-shaped resistivity ρ(T) curves, while SmFeAs(O, F) ones present a departure from their high-temperature linear behavior. In either case, a characteristic temperature can be identified. These temperatures correspond to those at which abrupt changes in the temperature behavior of Hall resistance and of Seebeck coefficient occur, suggesting that they are signatures of pseudogaps opening in the density of states. The direct correlation between these characteristic temperatures and the superconducting transition temperatures suggests that the pseudogap and the superconducting state originate from the same mechanism. Scaling procedures of resistivity curves confirm such proportionality. On the other hand, excess Fe content in Fe(Te, Se) samples affects the pseudogap temperature much more strongly than the superconducting T c . Finally, we find out that the pseudogap in the 1111 family is almost insensitive to disorder, as in high-T c cuprates. Springer Science+Business Media, LLC, 2010 Pseudogap nationallicence Pnictides and chalcogenides nationallicence Transport properties nationallicence Pallecchi I. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Tropeano M. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Ferdeghini C. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Lamura G. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Martinelli A. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Palenzona A. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Putti M. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1751-1760 1557-1939 24:5<1751 2011 24 10948 https://doi.org/10.1007/s10948-010-1119-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1119-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pallecchi I. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Tropeano M. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Ferdeghini C. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Lamura G. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Martinelli A. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Palenzona A. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 700 1- Putti M. CNR-SPIN, Corso Perrone 24, 16152, Geneva, Italy aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1751-1760 1557-1939 24:5<1751 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer