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Anomalous ferromagnetic resonance in manganese- and aluminum-doped germanium layers deposited from the laser plasma

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Abstract

Ferromagnetic resonance (FMR) with an anomalous angular dependence has been observed in the Ge:(Mn, Al)/GaAs nanolayers deposited from laser plasma at a reduced temperature of 150°C. The resonance is associated with the needle-like inclusions of a high-temperature ferromagnetic phase with the Curie temperature T C > 293 K. Such a magnetic anisotropy is confirmed by the atomicforce and magneticforce microscopy of a side chip. A low-temperature ferromagnetic phase with normal FMR and T C < 212 K is formed between the needle-like inclusions. This phase manifests itself in the anomalous Hall effect at 77 K and probably is a solid solution of manganese in germanium.

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Authors and Affiliations

  1. Nizhni Novgorod State University, pr. Gagarina 23, Nizhni Novgorod, 603950, Russia

    E. S. Demidov, S. A. Levchuk, S. N. Gusev & V. V. Karzanov

  2. Research Physicotechnical Institute, Nizhni Novgorod State University, pr. Gagarina 23 korp. 3, Nizhni Novgorod, 603950, Russia

    V. V. Podol’skii, V. P. Lesnikov & D. O. Filatov

Authors
  1. E. S. Demidov
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  2. V. V. Podol’skii
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  3. V. P. Lesnikov
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  4. S. A. Levchuk
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  5. S. N. Gusev
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  6. V. V. Karzanov
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  7. D. O. Filatov
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Corresponding author

Correspondence to E. S. Demidov.

Additional information

Original Russian Text © E.S. Demidov, V.V. Podol’skii, V.P. Lesnikov, S.A. Levchuk, S.N. Gusev, V.V. Karzanov, D.O. Filatov, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 90, No. 12, pp. 852–855.

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Demidov, E.S., Podol’skii, V.V., Lesnikov, V.P. et al. Anomalous ferromagnetic resonance in manganese- and aluminum-doped germanium layers deposited from the laser plasma. Jetp Lett. 90, 754–757 (2010). https://doi.org/10.1134/S0021364009240047

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  • DOI: https://doi.org/10.1134/S0021364009240047

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