2001/02/25 by S. V. Dordevic, E. J. Singley, D. N. Basov +9 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Cuprate #Electrical resistivity and conductivity #Geometry #Iron-based superconductors research #Lambda #London penetration depth #Omega #Penetration depth #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Scaling #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.65.134511
published as Phys.Rev.B Vol.65, 134511 (2002). · 4 pages, 2 figures
arxiv created 2001/02/25 · openalex publication_date 2002/03/20 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report on generic trends in the behavior of the interlayer penetration depth \ensuremathλc of several different classes of quasi-two-dimensional superconductors including high-Tc cuprates, Sr2RuO4, transition-metal dichalcogenides and organic materials of the (BEDT\ensuremath-TTF)2X series. An analysis of these trends reveals two distinct patterns in the scaling between the values of \ensuremathλc and the magnitude of the c-axis dc conductivity \ensuremathσdc: one realized in the systems with a ground state formed from well-defined quasiparticles, and the other seen in systems in which the quasiparticles are not well defined. The latter pattern is found primarily in underdoped cuprates, and indicates a dramatic enhancement (a factor \ensuremath≃102) of the energy scale \ensuremathΩC associated with the formation of the condensate compared to the data for conventional materials. We discuss the implication of these results on the understanding of superconductivity in high-Tc cuprates.