Electronic and magnetic properties of graphite quantum dots
We study the electronic and magnetic properties of multilayer quantum dots (MQDs) of graphite in the nearest-neighbor approximation of tight-binding model. We calculate the electronic density of states and orbital susceptibility of the system as function of the Fermi level location. We demonstrate t...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2015 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2015
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/122084 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Electronic and magnetic properties of graphite quantum dots / H. Abdelsalam, T. Espinosa-Ortega, I. Luk’yanchuk // Физика низких температур. — 2015. — Т. 41, № 5. — С. 508-513. — Бібліогр.: 31 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862546736868753408 |
|---|---|
| author | Abdelsalam, H. Espinosa-Ortega, T. Luk’yanchuk, I. |
| author_facet | Abdelsalam, H. Espinosa-Ortega, T. Luk’yanchuk, I. |
| citation_txt | Electronic and magnetic properties of graphite quantum dots / H. Abdelsalam, T. Espinosa-Ortega, I. Luk’yanchuk // Физика низких температур. — 2015. — Т. 41, № 5. — С. 508-513. — Бібліогр.: 31 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We study the electronic and magnetic properties of multilayer quantum dots (MQDs) of graphite in the nearest-neighbor approximation of tight-binding model. We calculate the electronic density of states and orbital susceptibility of the system as function of the Fermi level location. We demonstrate that properties of MQD depend strongly on the shape of the system, on the parity of the layer number and on the form of the cluster edge. The special emphasis is given to reveal the new properties with respect to the monolayer graphene quantum dots. The most interesting results are obtained for the triangular MQD with zig-zag edge at near-zero energies. The asymmetrically smeared multipeak feature is observed at Dirac point within the size-quantized energy gap region, where monolayer graphene flakes demonstrate the highly-degenerate zero-energy state. This feature, provided by the edge-localized electronic states results in the splash-wavelet behavior in diamagnetic orbital susceptibility as function of energy.
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| first_indexed | 2025-11-25T12:26:50Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-122084 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T12:26:50Z |
| publishDate | 2015 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Abdelsalam, H. Espinosa-Ortega, T. Luk’yanchuk, I. 2017-06-26T18:31:10Z 2017-06-26T18:31:10Z 2015 Electronic and magnetic properties of graphite quantum dots / H. Abdelsalam, T. Espinosa-Ortega, I. Luk’yanchuk // Физика низких температур. — 2015. — Т. 41, № 5. — С. 508-513. — Бібліогр.: 31 назв. — англ. 0132-6414 PACS: 75.75.–c, 73.21.La https://nasplib.isofts.kiev.ua/handle/123456789/122084 We study the electronic and magnetic properties of multilayer quantum dots (MQDs) of graphite in the nearest-neighbor approximation of tight-binding model. We calculate the electronic density of states and orbital susceptibility of the system as function of the Fermi level location. We demonstrate that properties of MQD depend strongly on the shape of the system, on the parity of the layer number and on the form of the cluster edge. The special emphasis is given to reveal the new properties with respect to the monolayer graphene quantum dots. The most interesting results are obtained for the triangular MQD with zig-zag edge at near-zero energies. The asymmetrically smeared multipeak feature is observed at Dirac point within the size-quantized energy gap region, where monolayer graphene flakes demonstrate the highly-degenerate zero-energy state. This feature, provided by the edge-localized electronic states results in the splash-wavelet behavior in diamagnetic orbital susceptibility as function of energy. This work was supported by the Egyptian mission sector and by the European mobility FP7 Marie Curie programs IRSES-SIMTECH and ITN-NOTEDEV. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 70-летию со дня рождения В. М. Локтева Electronic and magnetic properties of graphite quantum dots Article published earlier |
| spellingShingle | Electronic and magnetic properties of graphite quantum dots Abdelsalam, H. Espinosa-Ortega, T. Luk’yanchuk, I. К 70-летию со дня рождения В. М. Локтева |
| title | Electronic and magnetic properties of graphite quantum dots |
| title_full | Electronic and magnetic properties of graphite quantum dots |
| title_fullStr | Electronic and magnetic properties of graphite quantum dots |
| title_full_unstemmed | Electronic and magnetic properties of graphite quantum dots |
| title_short | Electronic and magnetic properties of graphite quantum dots |
| title_sort | electronic and magnetic properties of graphite quantum dots |
| topic | К 70-летию со дня рождения В. М. Локтева |
| topic_facet | К 70-летию со дня рождения В. М. Локтева |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/122084 |
| work_keys_str_mv | AT abdelsalamh electronicandmagneticpropertiesofgraphitequantumdots AT espinosaortegat electronicandmagneticpropertiesofgraphitequantumdots AT lukyanchuki electronicandmagneticpropertiesofgraphitequantumdots |