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2006 | 110 | 2 | 151-156
Article title

Features of Energy Spectrum of Pb_{1-x}Mn_xTe Doped with V

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EN
Abstracts
EN
Recently new effects that are not characteristic of undoped lead telluride, such as the Fermi level pinning, giant negative magnetoresistance, were observed in Pb_{1-x}Mn_xTe alloys doped with transition and rare earth elements - Cr, Mo, Yb. We have studied transport and magnetic properties of Pb_{1-x}Mn_xTe doped with another transition element - vanadium. A series of Pb_{1-x}Mn_xTe(V) samples of different composition and degree of doping was investigated. It was observed that the resistivity demonstrates activation behavior at low temperatures for the samples with considerable amount of vanadium as well as for the samples without vanadium. The activation energy is proportional to the Mn content. In some of the samples, photoconductivity was observed at low temperatures. The results are discussed in terms of a model assuming formation of the impurity level by the vanadium impurity and the effect of the Fermi level pinning by this level.
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Contributors
author
  • M.V. Lomonosov Moscow State University, Vorobjevy Gory 1, Moscow 119992, Russia
  • M.V. Lomonosov Moscow State University, Vorobjevy Gory 1, Moscow 119992, Russia
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
author
  • Chernovtsy Division of Institute of Problem of Semiconductor Material Science, Ukrainian Academy of Sciences, I. Vilde 5, Chernovtsy 274001, Ukraine
author
  • Chernovtsy Division of Institute of Problem of Semiconductor Material Science, Ukrainian Academy of Sciences, I. Vilde 5, Chernovtsy 274001, Ukraine
author
  • M.V. Lomonosov Moscow State University, Vorobjevy Gory 1, Moscow 119992, Russia
author
  • M.V. Lomonosov Moscow State University, Vorobjevy Gory 1, Moscow 119992, Russia
References
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  • 5. J. Niewodniczanska-Zawadzka, G. Elsinger, L. Palmetshofer, A. Lopez-Otero, E.J. Fantner, G. Bauer, W. Zawadzki, Physica B, 117, 458, 1983
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv110n205kz
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