Metallic CsI at pressures of up to 220 gigapascals
Eremets; Shimizu; Kobayashi; Amaya
Science 281(5381): 1333-1335
1998
ISSN/ISBN: 0036-8075 PMID: 9721094 Document Number: 493054
Direct electrical transport measurements in a diamond anvil cell provide evidence for the metallization of cesium iodide (Csl) at a pressure of 115 gigapascals. A drop in the temperature dependence of the resistance was found at pressures above 180 gigapascals, indicating that the Csl was superconductive. The superconductivity changed under the influence of a magnetic field to a lower critical temperature and disappeared above 0.3 tesla. The highest critical temperature at which superconductivity was observed was 2 kelvin, and the critical temperature decreased with increasing pressure. Copyright 1998 by the AAAS.