In-gap states and strain-tuned band convergence in layered structure trivalent iridate K_0.75Na_0.25IrO₂

Abstract

Iridium oxides (iridates) provide a good platform to study the delicate interplay between spin-orbit coupling (SOC) interactions, electron correlation effects, Hund’s coupling and lattice degree of freedom. However, overwhelming investigations...

Emerging quasi-one-dimensional material NbS4 with high carrier mobility and good visible-light adsorption performance for nanoscale applications

“…Furthermore, the VBM and CBM are accompanied by other local extrema along the high-symmetric directions, which have no or little difference in energy, leading to band convergence. 70 The band convergence of multi-valley conduction bands and multi-peak valence bands has been demonstrated as an effective strategy to improve electrical conductivity, which will benefit the thermoelectric application of NbS 4 .…”