Abstract
A new aspect of the charge dynamics in layered metallic cuprates has been discovered in the study of the in-plane Hall coefficient () in over a wide temeprature (4–500 K) and composition (0<x<0.35) range. The strongly temperature dependent , a hallmark of cuprate superconductors, is found to be the low temperature part of a simple functional form f(T/) which becomes constant for T>. This form, followed for x≥0.15, has a characteristic temperature which is high at the optimal composition (x=0.15) and decreases with increasing Sr concentration, similar to a temperature scale deduced from magnetic susceptibility.
- Received 1 July 1993
DOI:https://doi.org/10.1103/PhysRevLett.72.2636
©1994 American Physical Society