Inverse correlation between quasiparticle mass and T c in a cuprate high-T c superconductor.

ABSTRACT: Close to a zero-temperature transition between ordered and disordered electronic phases, quantum fluctuations can lead to a strong enhancement of electron mass and to the emergence of competing phases such as superconductivity. A correlation between the existence of such a quantum phase transition and superconductivity is quite well established in some heavy fermion and iron-based superconductors, and there have been suggestions that high-temperature superconductivity in copper-oxide materials (cuprates) may also be driven by the same mechanism. Close to optimal doping, where the superconducting transition temperature T c is maximal in cuprates, two different phases are known to compete with superconductivity: a poorly understood pseudogap phase and a charge-ordered phase. Recent experimen

SUBMITTER: Putzke C 

PROVIDER: S-EPMC4803492 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature