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/

Zendy Plus

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

Zendy Tools

Zendy Open

We report on magnetization experiments from which we obtain the field-inducedkinetic energy density, $E_k$, in the superconducting phase of severalBi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ single crystal samples. The kinetic energymagnitude changes according to the characteristic reduction of thesingle-electron density of states produced by the pseudogap in the underdopedlimit. Moreover, a remarkable peak of $E_k$ occurring at the specific holesdensity $p\sim0.18$ is related to a van Hove singularity due to the pseudogapclosure. We also extracted the superfluid density, $\rho_s$. We conclude that$E_k$ and $\rho_s$ are related to the pseudogap energy scale. This result isunderstood as an evidence of the coexistence between superconductivity and thepseudogap phenomenon in the Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ cupratecompound.

Effects of the pseudo-gap on the field-induced kinetic energy density of Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ single crystals