Abstract:
This article presents the results of a study of the magnetoresistance (MR) of a thin film of cadmium arsenide deposited on a sapphire leucosapphire substrate. In the study of MR, the effect of weak antilocalization, which arises due to surface states, was observed. The observed effect is well described by the Hikami-Larkin-Nagaoka model. The calculated value of the phase coherence length Lô varies depending on the temperature T according to the power law Lô ∼ T −1/2, which indicates the presence of two-dimensional topological surface states.
