Extended Data Fig. 6: Thermally driven atomic reconstruction in PtTe2 thin film.
From: Large-area non-stoichiometric phase transition in transition metal chalcogenide films
a, Schematic illustration of the thermally driven atomic reconstruction phase transition from PtTe2 to PtTe. The purple ball, yellow ball and red dashed circle represent Pt atom, Te atom, and VTe, respectively. b, Raman spectra of the PtTe2 film and the PtTe2/PtTe heterostructure annealed in the PLD system at 500 °C for 60 min. c,d, In situ STEM images of PtTe2 without heating and the partial phase transition from PtTe2 to PtTe under the heating temperature at 310 °C, respectively. The red-colored region in (d) indicates the PtTe phase. The scale bar is 2 nm. e,f, Magnified STEM images of the red and blue dashed rectangles in (c) and (d), respectively. The attached schematic atomic structures in (e) and (f) are PtTe2 and PtTe, respectively.
