One-dimensional weak antilocalization effect in 1T'-MoTe2nanowires grown by chemical vapor deposition

Jiancui Chen; Zhang Zhou; Hongtao Liu; Ce Bian; Yuting Zou; Zhenyu Wang; Zhen Zhao; Kang Wu; Haitao Yang; Chengmin Shen; Zhi Gang Cheng; Lihong Bao; Hong-Jun Gao

doi:10.1088/1361-648X/abef99

One-dimensional weak antilocalization effect in 1T'-MoTe₂nanowires grown by chemical vapor deposition

J Phys Condens Matter. 2021 Apr 23;33(18). doi: 10.1088/1361-648X/abef99.

Authors

Jiancui Chen^{1

2}, Zhang Zhou^{1

2}, Hongtao Liu^{1

2}, Ce Bian^{1

2}, Yuting Zou^{1

2}, Zhenyu Wang^{1

2}, Zhen Zhao^{1

2}, Kang Wu^{1

2}, Haitao Yang^{1

2

3}, Chengmin Shen^{1

2

3}, Zhi Gang Cheng^{1

2}, Lihong Bao^{1

2

3}, Hong-Jun Gao^{1

2

3}

Affiliations

¹ Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100190, People's Republic of China.
² University of Chinese Academy of Sciences and CAS Center for Excellence in Topological Quantum Computation, Chinese Academy of Sciences, PO Box 603, Beijing 100190, People's Republic of China.
³ Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, People's Republic of China.

PMID: 33730711
DOI: 10.1088/1361-648X/abef99

Abstract

We present a chemical vapor deposition method for the synthesizing of single-crystal 1T'-MoTe₂nanowires and the observation of one-dimensional weak antilocalization effect in 1T'-MoTe₂nanowires for the first time. The diameters of the 1T'-MoTe₂nanowires can be controlled by changing the flux of H₂/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'-MoTe₂nanowires 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 toT^-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.

Keywords: 1T′-MoTe2 nanowire; chemical vapor deposition; one-dimensional weak antilocalization effect; spin–orbit coupling.