Tight- binding study of electronic band structure of anisotropic honeycomb lattice
The two-dimensional structure of graphene, consisting of an isotropic hexagonal lattice of carbon atoms, shows fascinating electronic properties, such as a gapless energy band and Dirac fermion behavior of electrons at fermi surface. Anisotropy can be induced in this structure by electrochemical pre...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Islamic Azad University, Marvdasht Branch
2016-12-01
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| Series: | Journal of Optoelectronical Nanostructures |
| Subjects: | |
| Online Access: | https://jopn.marvdasht.iau.ir/article_2190_e38ede98f47cfebe7029bd193e5d32ce.pdf |
| _version_ | 1827969626249625600 |
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| author | maryam Hojatifar Peyman Sahebsara |
| author_facet | maryam Hojatifar Peyman Sahebsara |
| author_sort | maryam Hojatifar |
| collection | DOAJ |
| description | The two-dimensional structure of graphene, consisting of an isotropic hexagonal lattice of carbon atoms, shows fascinating electronic properties, such as a gapless energy band and Dirac fermion behavior of electrons at fermi surface. Anisotropy can be induced in this structure by electrochemical pressure. In this article, by using tight-binding method, we review anisotropy effects in the electronic nanostructure of graphene in one direction. For this purpose, we just consider π states, which express electronic characteristics, and compare electronic band of π states with that of isotropic honeycomb lattice in graphene. As a result, by applying pressure or stretching in one direction, the gap will be created in the electronic band at the fermion surface, which can be useful for semiconducting nano devices. The isotropic graphene has a band structure with no energy gap. By applying electrochemical pressure in one direction, the translational symmetry can be broken, therefore an energy gap appears between the two bands. |
| first_indexed | 2024-04-09T18:40:35Z |
| format | Article |
| id | doaj.art-571d8e8b975a46b985320201766e4d1d |
| institution | Directory Open Access Journal |
| issn | 2423-7361 2538-2489 |
| language | English |
| last_indexed | 2024-04-09T18:40:35Z |
| publishDate | 2016-12-01 |
| publisher | Islamic Azad University, Marvdasht Branch |
| record_format | Article |
| series | Journal of Optoelectronical Nanostructures |
| spelling | doaj.art-571d8e8b975a46b985320201766e4d1d2023-04-11T05:31:09ZengIslamic Azad University, Marvdasht BranchJournal of Optoelectronical Nanostructures2423-73612538-24892016-12-011317262190Tight- binding study of electronic band structure of anisotropic honeycomb latticemaryam Hojatifar0Peyman Sahebsara1Department of Physics, Isfahan University of Technology, Isfahan, IranDepartment of Physics, Isfahan University of Technology, Isfahan, IranThe two-dimensional structure of graphene, consisting of an isotropic hexagonal lattice of carbon atoms, shows fascinating electronic properties, such as a gapless energy band and Dirac fermion behavior of electrons at fermi surface. Anisotropy can be induced in this structure by electrochemical pressure. In this article, by using tight-binding method, we review anisotropy effects in the electronic nanostructure of graphene in one direction. For this purpose, we just consider π states, which express electronic characteristics, and compare electronic band of π states with that of isotropic honeycomb lattice in graphene. As a result, by applying pressure or stretching in one direction, the gap will be created in the electronic band at the fermion surface, which can be useful for semiconducting nano devices. The isotropic graphene has a band structure with no energy gap. By applying electrochemical pressure in one direction, the translational symmetry can be broken, therefore an energy gap appears between the two bands.https://jopn.marvdasht.iau.ir/article_2190_e38ede98f47cfebe7029bd193e5d32ce.pdfgrapheneelectronic nanostructureelectrochemical pressuretight-binding methodenergy gap band |
| spellingShingle | maryam Hojatifar Peyman Sahebsara Tight- binding study of electronic band structure of anisotropic honeycomb lattice Journal of Optoelectronical Nanostructures graphene electronic nanostructure electrochemical pressure tight-binding method energy gap band |
| title | Tight- binding study of electronic band structure of anisotropic honeycomb lattice |
| title_full | Tight- binding study of electronic band structure of anisotropic honeycomb lattice |
| title_fullStr | Tight- binding study of electronic band structure of anisotropic honeycomb lattice |
| title_full_unstemmed | Tight- binding study of electronic band structure of anisotropic honeycomb lattice |
| title_short | Tight- binding study of electronic band structure of anisotropic honeycomb lattice |
| title_sort | tight binding study of electronic band structure of anisotropic honeycomb lattice |
| topic | graphene electronic nanostructure electrochemical pressure tight-binding method energy gap band |
| url | https://jopn.marvdasht.iau.ir/article_2190_e38ede98f47cfebe7029bd193e5d32ce.pdf |
| work_keys_str_mv | AT maryamhojatifar tightbindingstudyofelectronicbandstructureofanisotropichoneycomblattice AT peymansahebsara tightbindingstudyofelectronicbandstructureofanisotropichoneycomblattice |