Fig. 1: Steady-state characterizations of PdSe2.
From: Phonon-assisted electronic states modulation of few-layer PdSe2 at terahertz frequencies
a Top and side views of PdSe2 in Cairo pentagonal tiling pattern with puckered structure. The Se and Pd atoms are shown in pale gold and blue, respectively. b Nanoscale surface topographic image of the as-synthesized PdSe2 on a quartz substrate. The white scale bar is 3 μm. c Height profiles derived from the AFM image. High-resolution XPS spectrum of (d) Se 3d and (e) Pd 3d. f Electronic band structure of eight-layer PdSe2 obtained from first-principles calculations. g Measured equilibrium absorption spectrum of the sample. The inset is the schematic illustration of pump–probe experiments.
