Magnetotransport Studies of (Cd 1 –  x  Zn  x  ) 3 As 2  at High Pressures

L. A. Saypulaeva; Сайпулаева Л. А.; V. S. Zakhvalinskii; Захвалинский В. С.; A. G. Alibekov; Алибеков А. Г.; Z. Sh. Pirmagomedov; Пирмагомедов З. Ш.; M. M. Gadzhialiev; Гаджиалиев М. М.; S. F. Marenkin; Маренкин С. Ф.; A. I. Ril; Риль А. И.; A. V. Kochura; Кочура А. В.

doi:10.31857/S1028096023100187

Magnetotransport Studies of (Cd_1 – xZn_x)₃As₂ at High Pressures

Authors: Saypulaeva L.A.¹, Zakhvalinskii V.S.², Alibekov A.G.¹, Pirmagomedov Z.S.¹, Gadzhialiev M.M.¹, Marenkin S.F.³, Ril A.I.³, Kochura A.V.⁴
Affiliations:
1. Institute of Physics, Russian Academy of Sciences Kh.I. Amirkhanov Dagestan Federal Research Center RAS
2. Belgorod State National Research University
3. Institute of General and Inorganic Chemistry N.S. Kurnakov of the RAS
4. Southwestern State University
Issue: No 10 (2023)
Pages: 76-82
Section: Articles
URL: https://freezetech.ru/1028-0960/article/view/664494
DOI: https://doi.org/10.31857/S1028096023100187
EDN: https://elibrary.ru/NPPJSG
ID: 664494

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Abstract
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Abstract

Resistivity ρ, magnetoresistance Δρ_xx/ρ₀(P) and Hall constant R_H were measured in (Cd_{1 – x}Zn_x)₃As₂ sample with х = 0.31 under the action of all-round pressure and at various temperatures in the range (80–400) K. These samples were obtained by the modified Bridgman method. The composition of the samples and their homogeneity were controlled by X-ray phase analysis and energy-dispersive X-ray spectroscopy. The results of energy dispersive X-ray spectroscopy showed that the distribution of elements in the sample is uniform. It was found that the resistivity increases with increasing temperature, and the change in ρ(T) has a metallic character. The Hall constant R_H in the field decreases slightly with increasing temperature and retains a negative sign throughout the entire range under study. With increasing pressure, anomalies were observed in the baric dependences of the electrical resistivity ρ(Р), magnetoresistance Δρ_xx/ρ₀(Р) and the Hall coefficient R_H(Р). Increasing the confining pressure leads to suppression of the positive magnetoresistance. In the phase transition region, the negative magnetoresistance at a pressure Р (2.4–2.7) GPa in a field of 5 kOe is the maximum value of 1.7.

Keywords

high pressures, negative magnetoresistance, Hall coefficient, electrical resistivity.

References

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