Fig. 1
From: Transport evidence of asymmetric spin–orbit coupling in few-layer superconducting 1Td-MoTe2
Structural and transport characterization of the as-synthesized 1Td-MoTe2 samples. a Optical images of monolayer (1L), bilayer (2L), trilayer (3L), and few layers of as-synthesized MoTe2. The size of the monolayer sample can reach up to 100 µm. The scale bar is 10 µm. b Raman spectra of the few-layer MoTe2 samples. Raman peaks were observed at 127, 161, and 267 cm−1, corresponding to the Ag modes of 1Td-MoTe2. c Atomic resolution scanning transmission electron microscopy (STEM) image of few-layer 1Td-MoTe2. Simulated STEM images of few-layer MoTe2 in 1T′ and 1Td stacking viewed along [0 0 1] zone axis are shown next to the experimental image, respectively. Compared with the simulation, the stacking of the few-layer MoTe2 is confirmed to be the 1Td phase. The scale bar is 0.5 nm. d Superconductivity in few-layer 1Td-MoTe2. The inset shows the temperature dependence of the reduced four-terminal resistance (R/R5 K) in the range from 0.3 to 4.5 K, for MoTe2 devices with the thickness ranging from 2 to 10 nm
