2015/04/02 by Tomohiro Usui, Usui, Tomohiro, Shintaro Adachi +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1504.00480
4 pages, 3 figures, 27th International Symposium on Superconductivity, ISS 2014, to appear in Physics Procedia
arxiv created 2015/04/02 · openalex publication_date 2015/04/02 · arxiv updated 2015/04/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We analyzed the in-plane and out-of-plane magnetoresistance (MR) for overdoped Bi1.6Pb0.4Sr2CaCu2O8+δ (Bi-2212) single crystals using superconductive fluctuation theory, which considers the density-of-states (DOS) contribution in layered superconductors with the conventional s-wave pairing state. The out-of-plane results are well reproduced by the theory, implying that the large, negative out-of-plane MR as well as the sharp increase in the zero-field out-of-plane resistivity ρc near the superconducting transition temperature Tc originate from the superconductive DOS fluctuation effect. On the other hand, the in-plane results are better reproduced without the DOS contribution (i.e., using only the Aslamazov-Larkin (AL) contribution), which may be explained in terms of the d-wave superconductivity of the layered superconductors.