Few-layer antimonene electrical properties

Antimonene -- a single layer of antimony atoms and its few forms are among the latest additions to 2D mono-elemental materials family. Numerous predictions experimental evidence remarkable properties including (opto)electronic, energetic or biomedical, others, together with robustness under ambient conditions, have attracted attention scientific community. However, electrical is still lacking. Here, we characterized electronic mechanically exfoliated flakes few-layer (FL) antimonene different thicknesses (~ 2-40 nm) through photoemission electron microscopy, kelvin probe force microscopy transport measurements, which allows us estimate sheet resistance ~ 1200 $\Omega$sq$^{-1}$ mobility 150 cm$^2$V$^{-1}$s$^{-1}$ in independent flake thickness. Alternatively, our theoretical calculations indicate that topologically protected surface states (TPSS) should play key role FL antimonene, supports findings. We anticipate work will trigger further studies on TPSS thanks simple structure significant stability environments.