Two-component energy spectrum of cuprates in the pseudogap phase and its evolution with temperature and at charge ordering.

ABSTRACT: In the search for mechanisms of high-temperature superconductivity it is critical to know the electronic spectrum in the pseudogap phase from which superconductivity evolves. The lack of angle-resolved photoemission data for every cuprate family precludes an agreement as to its structure, doping and temperature dependence and the role of charge ordering. Here we show that, in the entire Fermi-liquid-like regime that is ubiquitous in underdoped cuprates, the spectrum consists of holes on the Fermi arcs and an electronic pocket. We argue that experiments on the Hall coefficient identify the latter as a permanent feature at doped hole concentration x > 0.08-0.10, in contrast to the idea of the Fermi surface reconstruction via charge ordering. The longstanding issue of the origin of the negati

SUBMITTER: Gor'kov LP 

PROVIDER: S-EPMC4330546 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature