The superconducting phase of a superconductor is often one of several competing types of electronic order, including antiferromagnetism and charge density waves. For some superconductors, the superconducting transition temperature can be maximized by forcing the critical temperature of the competing order down to zero. Now, a related effect has been identified in a high-temperature superconductor, with the application of pressure yielding a striking two-step increase in the transition temperature.
- Xiao-Jia Chen
- Viktor V. Struzhkin
- Russell J. Hemley
