Quantum Corrections and Magnetotransport in 3D Dirac Semimetal Cd3 –xMnxAs2 Films
- 作者: Mekhiya A.1, Kazakov A.1, Oveshnikov L.1,2, Davydov A.1, Ril A.3, Marenkin S.3,4, Aronzon B.1
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隶属关系:
- Lebedev Physical Institute, Russian Academy of Sciences
- NRC “Kurchatov Institute”
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
- NUST MISiS
- 期: 卷 53, 编号 11 (2019)
- 页面: 1439-1444
- 栏目: Surfaces, Interfaces, and Thin Films
- URL: https://journals.rcsi.science/1063-7826/article/view/207266
- DOI: https://doi.org/10.1134/S1063782619110137
- ID: 207266
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详细
Thin films of solid solutions based on the three-dimensional Dirac semimetal Cd3As2 with the addition of manganese are investigated. Cd3 –xMnxAs2 films (x = 0, 0.05, and 0.1) 50–70 nm in thickness are formed on a glassceramic substrate using vacuum-thermal deposition from cadmium arsenide ingots doped by Mn and fabricated by direct alloying elements by the vacuum-cell method. The temperature and magnetic-field dependences of the resistance are measured and the transport parameters of the films under study are determined. Positive magnetoresistance of the characteristic shape corresponding to the contribution of the weak antilocalization effect is observed for films with x = 0 and 0.05. The contribution from the weak localization effect is observed at a higher Mn content (x = 0.1). This change in the quantum correction type as applied to topological semimetals points to reconstruction of the band structure and transition from the Dirac semimetal state into a trivial semiconductor phase, which corresponds to the critical Mn content xc ~ 0.07 in this case.
作者简介
A. Mekhiya
Lebedev Physical Institute, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991
A. Kazakov
Lebedev Physical Institute, Russian Academy of Sciences
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991
L. Oveshnikov
Lebedev Physical Institute, Russian Academy of Sciences; NRC “Kurchatov Institute”
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991; Moscow, 123182
A. Davydov
Lebedev Physical Institute, Russian Academy of Sciences
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991
A. Ril
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991
S. Marenkin
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; NUST MISiS
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991; Moscow, 119049
B. Aronzon
Lebedev Physical Institute, Russian Academy of Sciences
Email: a_mehia@mail.ru
俄罗斯联邦, Moscow, 119991