Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects
Electric transport properties and magnetoresistance (MR) of the array of metallic single-wall carbon nanotube bundles irradiated by the electron flux with the energy close to 1 MeV or Co⁶⁰ gamma quanta have been investigated within the temperature range T = 1.8…200 K and in the magnetic fields up to...
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| Published in: | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Date: | 2019 |
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2019
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/215589 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects / V.V. Vainberg, V.N. Poroshin, O.S. Pylypchuk, N.A. Tripachko, I.I. Yaskovets // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 4. — С. 418-423. — Бібліогр.: 18 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862617431544954880 |
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| author | Vainberg, V.V. Poroshin, V.N. Pylypchuk, O.S. Tripachko, N.A. Yaskovets, I.I. |
| author_facet | Vainberg, V.V. Poroshin, V.N. Pylypchuk, O.S. Tripachko, N.A. Yaskovets, I.I. |
| citation_txt | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects / V.V. Vainberg, V.N. Poroshin, O.S. Pylypchuk, N.A. Tripachko, I.I. Yaskovets // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 4. — С. 418-423. — Бібліогр.: 18 назв. — англ. |
| collection | DSpace DC |
| container_title | Semiconductor Physics Quantum Electronics & Optoelectronics |
| description | Electric transport properties and magnetoresistance (MR) of the array of metallic single-wall carbon nanotube bundles irradiated by the electron flux with the energy close to 1 MeV or Co⁶⁰ gamma quanta have been investigated within the temperature range T = 1.8…200 K and in the magnetic fields up to 5 T. The power-law behavior of the conduction vs temperature was observed within the range 50 to 200 K, which is typical for conduction of quasi-one-dimensional systems in the model of the electron gas as the Luttinger liquid. The change in power exponent α with the radiation dose and its deviation as compared to α for the non-irradiated samples is related to changing the number of conduction channels in the bundles as a consequence of the radiation defects appearing. At temperatures below 50 K, the Mott three-dimensional hopping conduction is realized. Using the measured dependence of conduction on the temperature and electric field, the density of electron states in the vicinity of the Fermi level, which participate in the hopping charge transport, and the localization length of charge carriers in these states have been determined. These parameters determining the hopping mechanism of the charge transport are noted to depend on the radiation dose. The magnetoresistance in the Mott-type hopping conduction region was negative in the whole range of magnetic fields, while at the large fields an upturn to the positive change was observed. The mechanisms of the negative and positive MR components are discussed.
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| first_indexed | 2026-03-23T18:58:48Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-215589 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1560-8034 |
| language | English |
| last_indexed | 2026-03-23T19:08:15Z |
| publishDate | 2019 |
| publisher | Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| record_format | dspace |
| spelling | Vainberg, V.V. Poroshin, V.N. Pylypchuk, O.S. Tripachko, N.A. Yaskovets, I.I. 2026-03-20T08:44:02Z 2019 Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects / V.V. Vainberg, V.N. Poroshin, O.S. Pylypchuk, N.A. Tripachko, I.I. Yaskovets // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 4. — С. 418-423. — Бібліогр.: 18 назв. — англ. 1560-8034 PACS: 72.15.Gd, 72.20.Ee, 72.20.Ht, 73.63.−b, 73.63.Fg https://nasplib.isofts.kiev.ua/handle/123456789/215589 https://doi.org/10.15407/spqeo22.04.418 Electric transport properties and magnetoresistance (MR) of the array of metallic single-wall carbon nanotube bundles irradiated by the electron flux with the energy close to 1 MeV or Co⁶⁰ gamma quanta have been investigated within the temperature range T = 1.8…200 K and in the magnetic fields up to 5 T. The power-law behavior of the conduction vs temperature was observed within the range 50 to 200 K, which is typical for conduction of quasi-one-dimensional systems in the model of the electron gas as the Luttinger liquid. The change in power exponent α with the radiation dose and its deviation as compared to α for the non-irradiated samples is related to changing the number of conduction channels in the bundles as a consequence of the radiation defects appearing. At temperatures below 50 K, the Mott three-dimensional hopping conduction is realized. Using the measured dependence of conduction on the temperature and electric field, the density of electron states in the vicinity of the Fermi level, which participate in the hopping charge transport, and the localization length of charge carriers in these states have been determined. These parameters determining the hopping mechanism of the charge transport are noted to depend on the radiation dose. The magnetoresistance in the Mott-type hopping conduction region was negative in the whole range of magnetic fields, while at the large fields an upturn to the positive change was observed. The mechanisms of the negative and positive MR components are discussed. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Hetero- and low-dimensional structures Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects Article published earlier |
| spellingShingle | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects Vainberg, V.V. Poroshin, V.N. Pylypchuk, O.S. Tripachko, N.A. Yaskovets, I.I. Hetero- and low-dimensional structures |
| title | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| title_full | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| title_fullStr | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| title_full_unstemmed | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| title_short | Low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| title_sort | low temperature charge transport in arrays of single-walled carbon nanotube bundles with radiation-induced defects |
| topic | Hetero- and low-dimensional structures |
| topic_facet | Hetero- and low-dimensional structures |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/215589 |
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