Transport characteristics of type II Weyl semimetal MoTe2 thin films grown by chemical vapor deposition

被引:6
|
作者
Bhattarai, Niraj [1 ,2 ]
Forbes, Andrew W. [1 ,2 ]
Dulal, Rajendra [3 ]
Pegg, Ian [1 ,2 ]
Philip, John [1 ,2 ]
机构
[1] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA
[2] Catholic Univ Amer, Vitreous State Lab, Washington, DC 20064 USA
[3] Chapman Univ, Adv Phys Lab, Inst Quantum Studies, Burtonsville, MD 20806 USA
关键词
thin film; chemical vapor deposition (CVD) (chemical reaction); magnetoresistance (transport); TRANSITION; SPIN;
D O I
10.1557/jmr.2019.320
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Theoretical calculations and experimental observations show MoTe2 is a type II Weyl semimetal, along with many members of transition metal dichalcogenides family. We have grown highly crystalline large-area MoTe2 thin films on Si/SiO2 substrates by chemical vapor deposition. Very uniform, continuous, and smooth films were obtained as confirmed by scanning electron microscopy and atomic force microscopy analyses. Measurements of the temperature dependence of longitudinal resistivity and current-voltage characteristics at different temperature are discussed. Unsaturated, positive quadratic magnetoresistance of the as-grown thin films has been observed from 10 to 200 K. Hall resistivity measurements confirm the majority charge carriers are hole.
引用
收藏
页码:454 / 461
页数:8
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