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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The point-contact spectra of tetragonal $\rm YBa_2Cu_3O_{7-\delta}$ with$T_c=50-60~K$ are studied at various temperatures. The single-electron energy($2\Delta_0/kT_c\simeq 17$) and its temperature dependence are determined. Thecharacteristic energies of quasiparticle excitations interacting withconduction electrons in this high-$T_c$. superconductor are found to correlatewith the characteristic phonon energies. The possibility of a pair gap, whichincreases with temperature, is revealed near the critical temperature.

Point-contact spectroscopy of superconducting YBaCuO single crystals of tetragonal modification