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

Based on the first-principles calculations, we reveal that TlN, a simplebinary compound with Wurtzite structure, is a three-dimensional (3D)topological insulator (TI) with effectively negative spin-orbit coupling$\lambda_{eff} < 0$, which makes it distinguished from other TIs by showingopposite spin-momentum locking effect in its surface states. The sign of$\lambda_{eff}$ depends on the hybridization between N-$2p$ and Tl-$5d$ states,and can be tuned from negative to postive by lattice strain or chemicalsubstitution, which drive the system into a Dirac semimetal with 3D Dirac conesin its bulk states. Such topological phase transition can be realized byelectronic mechanism without breaking any crystal symmetry.

Topological Insulator to Dirac Semimetal Transition Driven by Sign Change of Spin-Orbit Coupling in Thallium Nitride