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2017 | 132 | 2 | 229-232
Article title

Magnetotransport in Si ⟨Sb⟩ Delta-Layer after Swift Heavy Ion-Induced Modification

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EN
Abstracts
EN
In the present paper the investigations of the influence of swift heavy ion irradiation on the magnetotransport in the antimony (Sb) δ-layer in silicon are reported. Temperature and magnetic field dependences of the resistance R(T,B) and the Hall coefficient R_H(T,B) in the temperature range of 2K < T < 300K and B ≤ 8T before and after the 167 MeV Xe⁺²⁶ ion irradiation (ion fluence of 10⁸ cm¯²) were measured. At the temperatures below 50K there is observed the transition from the Arrhenius log R(1/T) to a logarithmic R ≈ -log(T) dependence both before and after the swift heavy ion exposure which confirms the assumption that the carrier transport goes through the δ-layer mainly. Moreover, the transition from the positive to negative magnetoresistance was observed with the temperature decrease that is characteristic of the two-dimensional quantum corrections to the conductivity in the case of weak localization regime. The appropriate Thouless lengths L_{Th}(T) ≈ A × T^{p} (where p and A are dependent on the scattering mechanism) indicated their ≈ 25-30% decrease after the swift heavy ion exposure. It was shown that the exponent p values were close to the theoretical one of p = 1, confirming the realization of 2D weak localization regime in the carrier transport.
Keywords
Contributors
author
  • Belarusian State University, Nezaleznasci av., 220030 Minsk, Belarus
author
  • Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia
  • Dubna State University, Universitetskaya 19, 141982, Dubna, Russia
  • National Research Nuclear University MEPhI, Kashirskoe hwy 31, 115409, Moscow, Russia
author
  • Institute for Physics of Microstructures, Russian Academy of Sciences, Academic 7, 603950, Nizhny Novgorod, Russia
  • Lobachevsky State University of Nizhny Novgorod, Gagarina av. 23, 603950, Nizhny Novgorod, Russia
author
  • Institute for Physics of Microstructures, Russian Academy of Sciences, Academic 7, 603950, Nizhny Novgorod, Russia
  • Lobachevsky State University of Nizhny Novgorod, Gagarina av. 23, 603950, Nizhny Novgorod, Russia
author
  • Belarusian State University, Nezaleznasci av., 220030 Minsk, Belarus
author
  • Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia
  • Dubna State University, Universitetskaya 19, 141982, Dubna, Russia
author
  • Belarusian State University, Nezaleznasci av., 220030 Minsk, Belarus
author
  • Lublin University of Technology, Nadbystrzycka 38D, 20-618 Lublin, Poland
author
  • Scientific-Practical Material Research Centre, National Academy of Sciences of Belarus, Brovki 19, 220072 Minsk, Belarus
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n2p07kz
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