One-dimensional weak antilocalization effect in 1T'-MoTe 2 nanowires grown by chemical vapor deposition.

We present a chemical vapor deposition method for the synthesizing of single-crystal 1T'-MoTe ₂ nanowires and the observation of one-dimensional weak antilocalization effect in 1T'-MoTe ₂ nanowires for the first time. The diameters of the 1T'-MoTe ₂ nanowires can be controlled by changing the flux of H ₂ /Ar carrier gas. Spherical-aberration-corrected transmission electron microscopy, selected area electron diffraction and energy dispersive x-ray spectroscopy (EDS) reveal the 1T' phase and the atomic ratio of Te/Mo closing to 2:1. The resistivity of 1T'-MoTe ₂ nanowires shows metallic behavior and agrees well with the Fermi liquid theory (<20 K). The coherence length extracted from 1D Hikami-Larkin-Nagaoka model with the presence of strong spin-orbit coupling is proportional to T ^-0.36 , indicating a Nyquist electron-electron interaction dephasing mechanism at one dimension. These results provide a feasible way to prepare one-dimensional topological materials and is promising for fundamental study of the transport properties.
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