Asymmetry and Parity Violation in Magnetoresistance of Magnetic Diluted Dirac–Weyl Semimetal (Cd0.6Zn0.36Mn0.04)3As2

Abstract

Orientation dependences of magnetoresistance, ρ (Formula presented.), of single crystal (Cd0.6Zn0.36Mn0.04)3As2 having tetragonal P42/nmc symmetry have been studied. Three orientations between electrical current, (Formula presented.), flowing along crystal (100) plane and magnetic field, (Formula presented.), have been used as follows: 1) (Formula presented.) is perpendicular to both (Formula presented.) and (100) plane; 2) (Formula presented.) is perpendicular to (Formula presented.) but parallel to (100) plane; 3) (Formula presented.) is parallel to both (Formula presented.) and (100) plane. Asymmetry in curves ρ (Formula presented.) is observed for all orientations. For orientation (2), crossover from negative to positive magnetoresistance is found as magnetic field changes its direction from one position corresponding to negative (Formula presented.) to opposite direction corresponding to positive (Formula presented.). So magnetoresistance parity typical for numerous solids is violated for this orientation. The Shubnikov–de Haas (SdH) oscillations are observed for all orientations above ≈1.8 T and below ≈40 K. The effective mass of electrons extracted from SdH oscillations analysis is found to be orientation dependent. Smeared kinks correlated with the SdH oscillations are also observed in the Hall effect study for orientation (1). Magnetoresistance peculiarities can be related to specific properties of the Dirac semimetals and their evolution under magnetic field.