Physics – Condensed Matter – Superconductivity
Scientific paper
2004-04-08
Nature 430 (2004) 539
Physics
Condensed Matter
Superconductivity
11 pages, 2 figures, 2 tables
Scientific paper
10.1038/nature02673
Scaling laws express a systematic and universal simplicity among complex systems in nature. For example, such laws are of enormous significance in biology. Scaling relations are also important in the physical sciences. The seminal 1986 discovery of high transition-temperature (high-T_c) superconductivity in cuprate materials has sparked an intensive investigation of these and related complex oxides, yet the mechanism for superconductivity is still not agreed upon. In addition, no universal scaling law involving such fundamental properties as T_c and the superfluid density \rho_s, a quantity indicative of the number of charge carriers in the superconducting state, has been discovered. Here we demonstrate that the scaling relation \rho_s \propto \sigma_{dc} T_c, where the conductivity \sigma_{dc} characterizes the unidirectional, constant flow of electric charge carriers just above T_c, universally holds for a wide variety of materials and doping levels. This surprising unifying observation is likely to have important consequences for theories of high-T_c superconductivity.
Ando Yoichi
Basov Dimitri N.
Bonn Douglas A.
Dordevic S. V.
Greven Martin
No associations
LandOfFree
Universal scaling relation in high-temperature superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Universal scaling relation in high-temperature superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal scaling relation in high-temperature superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158497