Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹2

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DOI: https://doi.org/10.30898/1684-1719.2025.2.15

 

 

 

LINEAR DISPERSION OF DIRAC FERMIONS
IN A SINGLE CRYSTAL OF A SOLID SOLUTION (Cd1-x-yZnxMny)3As2
composition x = 0.29, y = 0.01

 

V.S. Zakhvalinskii1, A.V. Borisenko1, A.V. Mashirov2,
A.V. Kochura3, M.N. Yapryntsev4

 

1Belgorod State National Research University
308015, Russia, Belgorod, Pobeda str., 85

2Kotelnikov IRE RAS
125009, Russia, Moscow, Mokhovaya str., 11, b.7

3Southwestern State University
305040, Russia, Kursk, 50th Anniversary of October str., b. 94

4Center for Collective Use "Technologies and Materials"
of the Belgorod State National Research University,
308034, Russia, Belgorod, Koroleva St., 2a, b. 5.

 

The paper was received February 4, 2025.

 

Abstract. The value of the effective mass mc(0)/m0 is determined in single crystals of a solid solution (Cd0.7Zn0.29Mn0.01)3As2 according to the results of a study of Shubnikov-de Haase oscillations in a transverse magnetic field. We compared the Shubnikov and Hall parameters of charge carriers. We have found a weak dependence of the cyclotron mass on the magnetic field. We determined the concentration of charge carriers, n2d, the mobility of charge carriers, µ2d, and the thickness of the 2D surface layer. We have determined the value of the Dingle temperature TD = 34.6 K. We have established that the dependence of the cyclotron mass mc(0)/m0 on the Fermi wave vector kF, obtained from experimentally observed Shubnikov-de Haase oscillations, agrees well with the linear dependence predicted by the theory and indicates the presence of Dirac fermions with zero effective mass in single crystals (Cd0.7Zn0.29Mn0.01)3As2. The Hall resistance oscillations are presumably caused both by the nonequipotency of the probes and by the manifestation of the quantum Hall effect in the 2D layer.

Key words: Shubnikov-de Haase effect, massless Dirac fermions, cyclotron mass, cadmium arsenide.

Financing: Ministry of Science and Higher Education (State Assignment No. 075-03-2025-526)

Corresponding author: Borisenko Alexander Vasilyevich, borisenko02.94@mail.ru

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For citation:

Zakhvalinskii V.S., Borisenko A.V., Mashirov A.V., Kochura A.V., Yapryntsev M.N. Linear dispersion of dirac fermions in a single crystal of a solid solution (Cd1-x-yZnxMny)3As2 composition x = 0.29, y = 0.01. // Journal of Radio Electronics. – 2025 – ¹ 2. https://doi.org/10.30898/1684-1719.2025.2.15 (In Russian)