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

In a recent contribution to this journal, it was shown that the transitiontemperatures of optimal high-Tc compounds obey the algebraic relation, Tc0 =kB-1{\beta}/\ell{\zeta}, where \ell is related to the mean spacing betweeninteracting charges in the layers, {\zeta} is the distance between interactingelectronic layers, {\beta} is a universal constant and kB is Boltzmann'sconstant. The equation was derived assuming pairing based on interlayer Coulombinteractions between physically separated charges. This theory was initiallyvalidated for 31 compounds from five different high-Tc families (within anaccuracy of \pm1.37 K). Herein we report the addition of Fe1+xSe1-y andFe1+xSe1-yTey (both optimized under pressure) and AzFe2-xSe2 (for A = K, Rb, orCs) to the growing list of Coulomb-mediated superconducting compounds in whichTc0 is determined by the above equation. Doping in these materials isaccomplished through the introduction of excess Fe and/or Se deficiency, or acombination of alkali metal and Fe vacancies. Consequently, a very small numberof vacancies or interstitials can induce a superconducting state with asubstantial transition temperature. The confirmation of the above equation forthese Se-based Fe chalcogenides increases to six the number of superconductingfamilies for which the transition temperature can be accurately predicted.

The Superconducting Transition Temperatures of Fe1+xSe1--y, Fe1+xSe1--yTey and (K/Rb/Cs)zFe2--xSe2