Fisica statistica

Quantized Repetitions of the Cuprate Pseudogap Line

by Vincent Sacksteder (Royal Holloway University of London)

Europe/Rome
Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

Aula Conversi

Dip. di Fisica - Edificio G. Marconi

Description
The cuprate high Tc superconductors exhibit a poorly understood pseudogap transition temperature which persists far above Tc, decreases as the material composition is doped to produce hole charge carriers, and traces a line across the temperature-doping phase diagram. We report a meta-analysis of all measurements of the pseudogap temperature in two prototypical cuprates, which reveals that the best-known pseudogap line is one of a family of four lines. These lines all originate from a single point near one edge of the superconducting phase, and their slopes follow a quantized mathematical pattern.