Abstract
The effects of pressure generated in a liquid-medium clamp pressure cell on the in-plane and -axis resistance, temperature-dependent Hall coefficient, and low-temperature magnetoresistance in are presented. The phase diagram, including the observation of a complete superconducting transition in resistivity delineated in earlier studies is found to be highly reproducible. The Hall resistivity and low-temperature magnetoresistance are sensitive to different states/phases observed in . Auxiliary measurements under uniaxial -axis pressure are in general agreement with the liquid-medium clamp cell results with some difference in critical pressure values and pressure derivatives. The data may be viewed as supporting the potential importance of nonhydrostatic components of pressure in inducing superconductivity in .
8 More- Received 25 May 2009
DOI:https://doi.org/10.1103/PhysRevB.80.014521
©2009 American Physical Society