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Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers
Using magneto transport, we probe hopping length scales in the variable range hopping conduction of carbonized polyacetylene and polyaniline nanofibers. In contrast to pristine polyacetylene nanofibers that show vanishing magneto conductance at large electric fields, carbonized polymer nanofibers di...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5862887/ https://www.ncbi.nlm.nih.gov/pubmed/29563568 http://dx.doi.org/10.1038/s41598-018-23254-0 |
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author | Kim, Kyung Ho Lara-Avila, Samuel He, Hans Kang, Hojin Hong, Sung Ju Park, Min Eklöf, Johnas Moth-Poulsen, Kasper Matsushita, Satoshi Akagi, Kazuo Kubatkin, Sergey Park, Yung Woo |
author_facet | Kim, Kyung Ho Lara-Avila, Samuel He, Hans Kang, Hojin Hong, Sung Ju Park, Min Eklöf, Johnas Moth-Poulsen, Kasper Matsushita, Satoshi Akagi, Kazuo Kubatkin, Sergey Park, Yung Woo |
author_sort | Kim, Kyung Ho |
collection | PubMed |
description | Using magneto transport, we probe hopping length scales in the variable range hopping conduction of carbonized polyacetylene and polyaniline nanofibers. In contrast to pristine polyacetylene nanofibers that show vanishing magneto conductance at large electric fields, carbonized polymer nanofibers display a negative magneto conductance that decreases in magnitude but remains finite with respect to the electric field. We show that this behavior of magneto conductance is an indicator of the electric field and temperature dependence of hopping length in the gradual transition from the thermally activated to the activation-less electric field driven variable range hopping transport. This reveals magneto transport as a useful tool to probe hopping lengths in the non-linear hopping regime. |
format | Online Article Text |
id | pubmed-5862887 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-58628872018-03-27 Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers Kim, Kyung Ho Lara-Avila, Samuel He, Hans Kang, Hojin Hong, Sung Ju Park, Min Eklöf, Johnas Moth-Poulsen, Kasper Matsushita, Satoshi Akagi, Kazuo Kubatkin, Sergey Park, Yung Woo Sci Rep Article Using magneto transport, we probe hopping length scales in the variable range hopping conduction of carbonized polyacetylene and polyaniline nanofibers. In contrast to pristine polyacetylene nanofibers that show vanishing magneto conductance at large electric fields, carbonized polymer nanofibers display a negative magneto conductance that decreases in magnitude but remains finite with respect to the electric field. We show that this behavior of magneto conductance is an indicator of the electric field and temperature dependence of hopping length in the gradual transition from the thermally activated to the activation-less electric field driven variable range hopping transport. This reveals magneto transport as a useful tool to probe hopping lengths in the non-linear hopping regime. Nature Publishing Group UK 2018-03-21 /pmc/articles/PMC5862887/ /pubmed/29563568 http://dx.doi.org/10.1038/s41598-018-23254-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Kim, Kyung Ho Lara-Avila, Samuel He, Hans Kang, Hojin Hong, Sung Ju Park, Min Eklöf, Johnas Moth-Poulsen, Kasper Matsushita, Satoshi Akagi, Kazuo Kubatkin, Sergey Park, Yung Woo Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title | Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title_full | Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title_fullStr | Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title_full_unstemmed | Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title_short | Probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
title_sort | probing variable range hopping lengths by magneto conductance in carbonized polymer nanofibers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5862887/ https://www.ncbi.nlm.nih.gov/pubmed/29563568 http://dx.doi.org/10.1038/s41598-018-23254-0 |
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