Accessing the entire overdoped regime in pristine YBa2Cu3 O6+x by application of pressure

Abstract

We uncover the previously inaccessible overdoped regime to attain the complete superconducting dome in a pristine high temperature cuprate superconductor, by applying pressures up to 280 kbar to single crystals near stoichiometric YBa2Cu3O7. The obtained superconducting phase boundary as a function of hole doping closely follows the form of the superconducting dome in La2-xSrxCuO4. Measurements are now enabled to trace the evolution of various entangled phases and the Fermi surface from the underdoped to overdoped regime in a single high purity cuprate superconducting family of materials.