Articles written in Bulletin of Materials Science

    • Negative magnetoresistance in Dirac semimetal Cd$_3$As$_2$ in the variable range hopping regime


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      Cadmium arsenide (Cd$_3$As$_2$) is a Dirac semimetal intensively investigated in the last decade due to its stability and high mobility. Cd$_3$As$_2$ shows large negative magnetoresistance (NMR) over a wide range of magnetic field. Such NMR has been analysed in the framework of localized magnetic field and quantum interference theories. At low magnetic fields, quantum interference theory is consistent with the experimental data which can be described by variable range hopping (VRH) in the presence of a soft Coulomb gap (Efros–Shklovskii VRH). On the other hand, at moderate magnetic fields, the data are well described by the localized magnetic moment theory and the NMR is well approximated by the Langevin function.

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