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

Topological crystalline metals/semimetals (TCMs) have stimulated a greatresearch interest, which broaden the classification of topological phases andprovide a valuable platform to explore topological superconductivity. Here, wereport the discovery of superconductivity and topological features inPb-intercalated transition-metal dichalcogenide Pb$_{1/3}$TaS$_2$. Systematicmeasurements indicate that Pb$_{1/3}$TaS$_2$ is a quasi-two-dimensional (q-2D)type-II superconductor ({\em T}$_c \approx$ 2.8 K) with a significantlyenhanced anisotropy of upper critical field ($\gamma_{H_{c2}}$ =$H_{c2}^{ab}/H_{c2}^{c}$ $\approx$ 17). In addition, first-principlescalculations reveal that Pb$_{1/3}$TaS$_2$ hosts multiple topological Diracfermions in the electronic band structure. We discover four groups of Diracnodal lines on the $k_z = \pi$ plane and two sets of Dirac points on therotation/screw axes, which are protected by crystalline symmetries and robustagainst spin-orbit coupling (SOC). Dirac-cone-like surface states emerge on the(001) surface because of band inversion. Our work shows that the TCM candidatePb$_{1/3}$TaS$_2$ is a promising arena to study the interplay betweensuperconductivity and topological Dirac fermions.

Anisotropic superconductivity in topological crystalline metal Pb$_{1/3}$TaS$_2$ with multiple Dirac fermions