Anomalous cyclotron mass dependence on the magnetic field and Berry's phase in (Cd1-x-yZnxMny)(3)As-2 solid solutions

作者：Zakhvalinskii V S^*; Nikulicheva T B; Lahderanta E; Shakhov M A; Nikitovskaya E A; Taran S V

来源：Journal of Physics: Condensed Matter , 2017, 29(45): 455701.

DOI：10.1088/1361-648X/aa8bdb

• Shubnikov-de Haas effect
• cyclotron mass
• cadmium arsenide
• 3D topological Dirac semimetals
• diluted magnetic semiconductor
• Berry's phase
• topological insulator

Shubnikov-de Haas (SdH) effect and magnetoresistance measurements of single crystals of diluted II-V magnetic semiconductors (Cd1-x-yZnxMny)(3)As-2 (x + y = 0.4, y = 0.04 and 0.08) are investigated in the temperature range T = 4.2 divided by 300 K and in transverse magnetic field B = 0 divided by 25 T. The values of the cyclotron mass m(c), the effective g-factor g*, and the Dingle temperature T-D are defined. In one of the samples (y = 0.04) a strong dependence of the cyclotron mass on the magnetic field m(c)(B) = m(c)(0) + alpha B is observed. The value of a phase shift close to beta = 0.5 indicates the presence of Berry phase and 3D Dirac fermions in a single crystals of (Cd1-x-yZnxMny)(3)As-2 in one of the samples (y = 0.08).

• 出版日期2017-11-15