Abstract
High-resolution measurements of the thermal-expansion coefficient of pressurized () near (; ) by a new technique yielded a universal (pressure-independent) critical exponent , a universal amplitude ratio for the leading singularity, and a universal ratio for the amplitudes of the confluent singularity. These results agree with renormalization-group theory, but are in part contrary to previous experiments.
- Received 10 December 1974
DOI:https://doi.org/10.1103/PhysRevLett.34.513
©1975 American Physical Society