Dissipation in high-temperature superconductors: From short- to long-range percolative order

Autor:	Prester M, Marohnic Z
Rok vydání:	1995
Předmět:	Physics Superconductivity High-temperature superconductivity Percolation theory Condensed matter physics Electrical resistivity and conductivity law Computer Science::Information Retrieval Exponent Order (ring theory) Percolation threshold Critical exponent law.invention
Zdroj:	Physical Review B. 51:12861-12864
ISSN:	1095-3795 0163-1829
Popis:	We studied the onset of dissipation in polycrystalline high-{ital T}{sub {ital c}} superconductors by the use of high-resolution {ital I}-{ital V} and {ital I}-{ital dV}/{ital dI} measurements. Universal features of the nonlinear {ital I}-{ital V} characteristics have been related to the critical exponents {ital t} and {ital s} of percolation theory and to the percolation threshold concentration which in our model underlies the concept of critical current. The model allows a determination of the conductivity exponent {ital t} from a single characteristic and gives, as an experimental result, {ital t}=1.95.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79d670aaf035503a70c42fd5c4f9a4df https://doi.org/10.1103/physrevb.51.12861 Zobrazit plný text záznamu