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Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity

The magnetization and magnetoresistance of Si whiskers doped with <Ni, B> to boron concentrations corresponding to the metal-insulator transition (2 × 10(18) cm(−3) ÷ 5 × 10(18) cm(−3)) were measured at high magnetic fields up to 14 T in a wide temperature range 4.2–300 K. Hysteresis of the ma...

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Autores principales: Yatsukhnenko, Serhii, Druzhinin, Anatoly, Ostrovskii, Igor, Khoverko, Yuriy, Chernetskiy, Mukhajlo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5267756/
https://www.ncbi.nlm.nih.gov/pubmed/28127712
http://dx.doi.org/10.1186/s11671-017-1855-9
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author Yatsukhnenko, Serhii
Druzhinin, Anatoly
Ostrovskii, Igor
Khoverko, Yuriy
Chernetskiy, Mukhajlo
author_facet Yatsukhnenko, Serhii
Druzhinin, Anatoly
Ostrovskii, Igor
Khoverko, Yuriy
Chernetskiy, Mukhajlo
author_sort Yatsukhnenko, Serhii
collection PubMed
description The magnetization and magnetoresistance of Si whiskers doped with <Ni, B> to boron concentrations corresponding to the metal-insulator transition (2 × 10(18) cm(−3) ÷ 5 × 10(18) cm(−3)) were measured at high magnetic fields up to 14 T in a wide temperature range 4.2–300 K. Hysteresis of the magnetic moment was observed for Si p-type whiskers with nickel impurity in a wide temperature range 4.2–300 K indicating a strong interaction between the Ni impurities and the possibility of a magnetic cluster creation. The introduction of Ni impurity in Si whiskers leads to appearance and increase of the magnitude of negative magnetoresistance up to 10% as well as to the decrease of the whisker resistivity in the range of hopping conductance at low temperatures. The abovementioned effects were explained in the framework of appearance of magnetic polarons leading to modification of the conductive channels in the subsurface layers of the whiskers.
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spelling pubmed-52677562017-02-09 Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity Yatsukhnenko, Serhii Druzhinin, Anatoly Ostrovskii, Igor Khoverko, Yuriy Chernetskiy, Mukhajlo Nanoscale Res Lett Nano Express The magnetization and magnetoresistance of Si whiskers doped with <Ni, B> to boron concentrations corresponding to the metal-insulator transition (2 × 10(18) cm(−3) ÷ 5 × 10(18) cm(−3)) were measured at high magnetic fields up to 14 T in a wide temperature range 4.2–300 K. Hysteresis of the magnetic moment was observed for Si p-type whiskers with nickel impurity in a wide temperature range 4.2–300 K indicating a strong interaction between the Ni impurities and the possibility of a magnetic cluster creation. The introduction of Ni impurity in Si whiskers leads to appearance and increase of the magnitude of negative magnetoresistance up to 10% as well as to the decrease of the whisker resistivity in the range of hopping conductance at low temperatures. The abovementioned effects were explained in the framework of appearance of magnetic polarons leading to modification of the conductive channels in the subsurface layers of the whiskers. Springer US 2017-01-26 /pmc/articles/PMC5267756/ /pubmed/28127712 http://dx.doi.org/10.1186/s11671-017-1855-9 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Yatsukhnenko, Serhii
Druzhinin, Anatoly
Ostrovskii, Igor
Khoverko, Yuriy
Chernetskiy, Mukhajlo
Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title_full Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title_fullStr Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title_full_unstemmed Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title_short Nanoscale Conductive Channels in Silicon Whiskers with Nickel Impurity
title_sort nanoscale conductive channels in silicon whiskers with nickel impurity
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5267756/
https://www.ncbi.nlm.nih.gov/pubmed/28127712
http://dx.doi.org/10.1186/s11671-017-1855-9
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