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Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 107, Issue 10, Pages 643–649 (Mi jetpl5575)  

CONDENSED MATTER

Structure-dependent magnetoresistance in the Zn$_{0.1}$Cd$_{0.9}$GeAs$_2$ + MnAs hybrid nanocomposite

R. K. Arslanova, T. R. Arslanova, I. V. Fedorchenkob, L. Kilanskic, T. Chatterjid

a Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Russia
b Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
c Institute of Physics, Polish Academy of Sciences, Warsaw, Poland
d Institute Laue-Langevin, Grenoble Cedex 9, France

Abstract: The effect of high pressure on electron transport and on the field dependence of the transverse magnetoresistance has been studied in a hybrid nanocomposite based on the Zn$_{0.1}$Cd$_{0.9}$GeAs$_2$ matrix and MnAs clusters. A record high negative magnetoresistance of $\sim74%$ is formed near a pressure-induced structural transition ($P\approx 3.5$ GPa). The considered scattering mechanisms include both the contribution from MnAs clusters at relatively low pressures (up to $0.7$ GPa) and spin-dependent scattering by localized magnetic moments in the Mn-substituted structure of the matrix in the region of the structural transition. The presence of the positive magnetoresistance region associated with the two-band transport model in the high-pressure phase, as well as the large negative magnetoresistance, is described in the framework of the semiempirical Khosla–Fischer expression.

Funding Agency Grant Number
Russian Foundation for Basic Research 16-02-00210_
16-32-00661__
16-03-00796_a


DOI: https://doi.org/10.7868/S0370274X18100053

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 107:10, 612–617

Bibliographic databases:

Document Type: Article
Received: 16.03.2018
Revised: 26.03.2018

Citation: R. K. Arslanov, T. R. Arslanov, I. V. Fedorchenko, L. Kilanski, T. Chatterji, “Structure-dependent magnetoresistance in the Zn$_{0.1}$Cd$_{0.9}$GeAs$_2$ + MnAs hybrid nanocomposite”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:10 (2018), 643–649; JETP Letters, 107:10 (2018), 612–617

Citation in format AMSBIB
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\by R.~K.~Arslanov, T.~R.~Arslanov, I.~V.~Fedorchenko, L.~Kilanski, T.~Chatterji
\paper Structure-dependent magnetoresistance in the Zn$_{0.1}$Cd$_{0.9}$GeAs$_2$\,+\,MnAs hybrid nanocomposite
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2018
\vol 107
\issue 10
\pages 643--649
\mathnet{http://mi.mathnet.ru/jetpl5575}
\crossref{https://doi.org/10.7868/S0370274X18100053}
\transl
\jour JETP Letters
\yr 2018
\vol 107
\issue 10
\pages 612--617
\crossref{https://doi.org/10.1134/S0021364018100041}
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