Fig. 1: Morphology and polymorphs of monolayer MoTe2.
From: Electronic Janus lattice and kagome-like bands in coloring-triangular MoTe2 monolayers
a, b Large-scale scanning tunneling microscopy (STM) topography (a) and current (b) images of the synthetic MoTe2. Local 1H- and 1 T’-MoTe2 phases, and mirror-twin boundaries (MTB) with 1H phase are labelled as 1H, 1 T’ and MTB&1H, respectively. c Magnified STM topographic image showing 1H-MoTe2 domains and MTB networks. d Atomically resolved STM topographic image of MTB triangles. e, f Typical dI/dV spectra taken on the 1H-MoTe2 domains (e) and MTB networks (f), respectively. g–i Illustration of the atomic models of MTB triangles of different sizes of N. The red and yellow spheres represent Te atoms, the violet spheres represent Mo atoms. N represents the number of the Te2 unit (red spheres) in the 1H-MoTe2 ___domain. Red hashed triangles outline Mo-terminated triangular domains (MTTD), while their associated MTB loops are highlighted using orange dotted triangles (hereinafter). Hi and Lo represent High and Low in the color scalebar of STM images herein. Scanning parameters are (a, b) V = 2.6 V, I = 100pA, 52 nm × 52 nm; (c) V = 2.0 V, I = 70pA, 10 nm × 10 nm; (d) V = −1.1 V, I = −80pA, 12 nm × 12 nm.
