2007/06/30 by S. Huefner, S Hüfner, M. A. Hossain +5 · 4 citations
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/0034-4885/71/6/062501
published as Rep. Prog. Phys. 71, 062501 (2008). · Related material can be found at http://www.physics.ubc.ca/~quantmat/ARPES/PUBLICATIONS/articles.html
arxiv created 2008/02/25 · openalex publication_date 2008/05/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
One of the keys to the high-temperature superconductivity puzzle is the identification of the energy scales associated with the emergence of a coherent condensate of superconducting electron pairs. These might provide a measure of the pairing strength and of the coherence of the superfluid, and ultimately reveal the nature of the elusive pairing mechanism in the superconducting cuprates. To this end, a great deal of effort has been devoted to investigating the connection between the superconducting transition temperature T c and the normal-state pseudogap crossover temperature T * . Here we present a review of a large body of experimental data which suggests a coexisting two-gap scenario, i.e. superconducting gap and pseudogap, over the whole superconducting dome. We focus on spectroscopic data from cuprate systems characterized by , such as Bi 2 Sr 2 CaCu 2 O 8+δ , YBa 2 Cu 3 O 7−δ , Tl 2 Ba 2 CuO 6+δ and HgBa 2 CuO 4+δ , with particular emphasis on the Bi-compound which has been the most extensively studied with single-particle spectroscopies.