Anomalous cyclotron mass dependence on the magnetic field and Berry's phase in (Cd1-x-y Zn x Mn y )3As2 solid solutions

V S Zakhvalinskii; T B Nikulicheva; E Lähderanta; M A Shakhov; E A Nikitovskaya; S V Taran

doi:10.1088/1361-648X/aa8bdb

Anomalous cyclotron mass dependence on the magnetic field and Berry's phase in (Cd_1-x-y Zn _x Mn _y )₃As₂ solid solutions

J Phys Condens Matter. 2017 Nov 15;29(45):455701. doi: 10.1088/1361-648X/aa8bdb.

Authors

V S Zakhvalinskii¹, T B Nikulicheva, E Lähderanta, M A Shakhov, E A Nikitovskaya, S V Taran

Affiliation

¹ Belgorod National Research University, 85 Pobedy St, Belgorod, 308015, Russia.

PMID: 28895554
DOI: 10.1088/1361-648X/aa8bdb

Abstract

Shubnikov-de Haas (SdH) effect and magnetoresistance measurements of single crystals of diluted II-V magnetic semiconductors (Cd_1-x-y Zn _x Mn _y )₃As₂ (x + y = 0.4, y = 0.04 and 0.08) are investigated in the temperature range T = 4.2 ÷ 300 K and in transverse magnetic field B = 0 ÷ 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) + αB is observed. The value of a phase shift close to β = 0.5 indicates the presence of Berry phase and 3D Dirac fermions in a single crystals of (Cd_1-x-y Zn _x Mn _y )₃As₂ in one of the samples (y = 0.08).