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 the discovery of bulk superconductivity (SC) at 6.1 K in aquasi-one-dimensional (Q1D) chromium pnictide K$_2$Cr$_3$As$_3$ which contains[(Cr$_3$As$_3$)$^{2-}$]$_{\infty}$ double-walled subnano-tubes withface-sharing Cr$_{6/2}$ (As$_{6/2}$) octahedron linear chains in the inner(outer) wall. The material has a large electronic specific-heat coefficient of70$\sim$75 mJ K$^{-2}$ mol$^{-1}$, indicating significantly strong electroncorrelations. Signature of non-Fermi liquid behavior is shown by the lineartemperature dependence of resistivity in a broad temperature range from 7 to300 K. Unconventional SC is preliminarily manifested by the estimated uppercritical field exceeding the Pauli limit by a factor of three to four. Thetitle compound represents a rare example that possibly unconventional SCemerges in a Q1D system with strong electron correlations.

Superconductivity in quasi-one-dimensional K$_2$Cr$_3$As$_3$ with significant electron correlations