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Effects of Magnetic Ordering in Conductivity and Magnetization of GaAs-Based Semiconductor Heterostructures upon Changing the Concentration of the Delta-Layer of Manganese Admixture

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Abstract

Characteristic effects of magnetic ordering and conduction in semiconductor heterostructures with a GaAs : Be/Ga0.84In0.16As/GaAs quantum well and manganese δ-layers of different thickness (from 0.4 to 2 monolayers) were studied based on analysis of magnetic field and temperature dependences, galvanomagnetic effects, and magnetization. An anomalous dependence of the conductivity on the manganese atoms concentration in the δ-layer was observed, which was due to a strong scattering of charge carriers in the structures with the low content of magnetic impurities. Magnetic properties of the heterostructures clearly indicated the magnetic ordering of the impurity system (saturation and hysteresis of the magnetization and fulfillment of the Curie–Weiss law at increasing temperature). Parameters of the magnetic subsystem allowed revealing different types of ordering in the systems with different concentrations of the magnetic impurity. Changing the concentration of the Mn admixture in the δ-layer was shown to influence significantly the conductivity and magnetism in the studied structures.

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ACKNOWLEDGMENTS

Authors are grateful to M. Lopez-Lopez (National Polytechnic Institute SINVESTAV, Mexica) for providing the heterostructures and A.F. Gubkin (Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg) for assistance in conducting magnetic measurements on the MPMS-XL-5 apparatus.

The work was performed under the auspices of the state contract (subject “Electron,” no. AAAA-A18-118020190098-5) and project no. 18-10-2-6 of the Program of the Ural Branch of the Russian Academy of Sciences, and also was supported by the Russian Foundation for Basic Research (project no. 18-02-00192).

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Authors and Affiliations

  1. Ioffe Institute, 194021, St. Petersburg, Russia

    K. D. Moiseev

  2. National Polytechnic Institute SINVESTAV, 07360, Mexico City, Mexico

    Yu. A. Kudryavtsev

  3. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Yekaterinburg, Russia

    T. B. Charikova, A. M. Lugovykh, T. E. Govorkova & V. I. Okulov

  4. Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002, Yekaterinburg, Russia

    T. B. Charikova & V. I. Okulov

Authors
  1. K. D. Moiseev
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  2. Yu. A. Kudryavtsev
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  3. T. B. Charikova
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  4. A. M. Lugovykh
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  5. T. E. Govorkova
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  6. V. I. Okulov
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Correspondence to K. D. Moiseev.

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Translated by S. Efimov

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Moiseev, K.D., Kudryavtsev, Y.A., Charikova, T.B. et al. Effects of Magnetic Ordering in Conductivity and Magnetization of GaAs-Based Semiconductor Heterostructures upon Changing the Concentration of the Delta-Layer of Manganese Admixture. Phys. Solid State 60, 2402–2407 (2018). https://doi.org/10.1134/S1063783418120211

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  • DOI: https://doi.org/10.1134/S1063783418120211

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