Effect of the Landau Levels on the Super Hyperfine Structure of ESR Spectra of Fe3+ Precipitates in Dirac 3D Semimetal Cd3As2

The influence of d -metal impurities on the magnetic and transport properties of 3D topological semimetal Cd 3 As 2 has been experimentally studied. It is found that alloying with iron does not change the sign of magnetoresistance (in contrast to Eu). Amplification of oscillations of the parameters...

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Bibliographic Details
Published in:Physics of the solid state 2020, Vol.62 (1), p.100-105
Main Authors: Goryunov, Yu. V., Nateprov, A. N.
Format: Article
Language:English
Subjects:
Contact potentials
Ferric ions
Hyperfine structure
Impurities
Iron
Magnetic permeability
Magnetic properties
Magnetoresistance
Magnetoresistivity
Metals
Oscillations
Physics
Physics and Astronomy
Precipitates
Solid State Physics
Transport properties
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Summary:The influence of d -metal impurities on the magnetic and transport properties of 3D topological semimetal Cd 3 As 2 has been experimentally studied. It is found that alloying with iron does not change the sign of magnetoresistance (in contrast to Eu). Amplification of oscillations of the parameters (magnetic susceptibility, contact potential difference, and conductivity) related to oscillations of the density of states at the Fermi level is observed with a change in temperature and magnetic field. ESR signals from Fe 2+ ions (which are most likely the main type of Fe impurity in Cd 3 As 2 ) have not been detected in the temperature range of 10–300 K. Weak ESR signals with a super hyperfine structure, which is obviously affected by the Landau levels, have been observed from Fe 3+ ions.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783420010114