English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report transport measurements using pulsed magnetic fields to suppress thesuperconducting fluctuations (SCF) conductivity in a series of YBa_2Cu_3O_(6+x)samples. These experiments allow us altogether to measure the temperature T'cat which SCF disappear, and the pseudogap temperature T*. While the latter areconsistent with previous determinations of T*, we find that T'c is slightlylarger than similar data taken by Nernst measurements. A careful investigationnear optimal doping shows that T* becomes smaller than T'c, which is anunambiguous evidence that the pseudogap cannot be assigned to preformed pairs.Studies of the incidence of disorder on both T'c and T* allow us to propose aphase diagram including disorder which explains most observations done in othercuprate families, and to discuss the available knowledge on the pseudogap linein the phase diagram.

Superconducting Fluctuations, Pseudogap and Phase Diagram in Cuprates