ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION
This research paper focuses on investigating the metal-insulator transition occurring in quasi-one-dimensional organic crystals of TTT(TCNQ)2. The study utilizes a 3D approximation approach and introduces a physical model that incorporates two essential electron-phonon interactions....
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| Format: | Article |
| Language: | English |
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Technical University of Moldova
2023-10-01
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| Series: | Journal of Engineering Science (Chişinău) |
| Subjects: | |
| Online Access: | https://press.utm.md/index.php/jes/article/view/2023-30-3-01/01-pdf |
| _version_ | 1827375468969459712 |
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| author | ANDRONIC, Silvia SANDULEAC, Ionel |
| author_facet | ANDRONIC, Silvia SANDULEAC, Ionel |
| author_sort | ANDRONIC, Silvia |
| collection | DOAJ |
| description | This research paper focuses on investigating the metal-insulator transition occurring in quasi-one-dimensional organic crystals of TTT(TCNQ)2. The study utilizes a 3D approximation approach and introduces a physical model that incorporates two essential electron-phonon interactions. The first interaction is akin to the deformation potential, while the second interaction follows a polaron type behavior. By employing the random phase approximation, the renormalized phonon spectrum is calculated across different temperatures and various values of the dimensionless Fermi momentum kF. The findings indicate that the transition exhibits characteristics of the Peierls type, and the critical temperature associated with the Peierls transition is determined. Furthermore, an interesting observation is made that the Peierls critical temperature experiences a notable decrease with an increase in carrier concentration. |
| first_indexed | 2024-03-08T11:51:17Z |
| format | Article |
| id | doaj.art-52e597c0a2ba4d04891cc19f3ddc98a6 |
| institution | Directory Open Access Journal |
| issn | 2587-3474 2587-3482 |
| language | English |
| last_indexed | 2024-03-08T11:51:17Z |
| publishDate | 2023-10-01 |
| publisher | Technical University of Moldova |
| record_format | Article |
| series | Journal of Engineering Science (Chişinău) |
| spelling | doaj.art-52e597c0a2ba4d04891cc19f3ddc98a62024-01-24T10:12:22ZengTechnical University of MoldovaJournal of Engineering Science (Chişinău)2587-34742587-34822023-10-01XXX3715https://doi.org/10.52326/jes.utm.2023.30(3).01ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATIONANDRONIC, Silvia0https://orcid.org/0000-0002-7092-6867SANDULEAC, Ionel1https://orcid.org/0000-0001-7532-1288Technical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau, Republic of MoldovaTechnical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau, Republic of MoldovaThis research paper focuses on investigating the metal-insulator transition occurring in quasi-one-dimensional organic crystals of TTT(TCNQ)2. The study utilizes a 3D approximation approach and introduces a physical model that incorporates two essential electron-phonon interactions. The first interaction is akin to the deformation potential, while the second interaction follows a polaron type behavior. By employing the random phase approximation, the renormalized phonon spectrum is calculated across different temperatures and various values of the dimensionless Fermi momentum kF. The findings indicate that the transition exhibits characteristics of the Peierls type, and the critical temperature associated with the Peierls transition is determined. Furthermore, an interesting observation is made that the Peierls critical temperature experiences a notable decrease with an increase in carrier concentration.https://press.utm.md/index.php/jes/article/view/2023-30-3-01/01-pdfmetal-insulator transitionorganic materialsquasi-one-dimensional organic crystalsrenormalized phonon spectrumpeierls critical temperature |
| spellingShingle | ANDRONIC, Silvia SANDULEAC, Ionel ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION Journal of Engineering Science (Chişinău) metal-insulator transition organic materials quasi-one-dimensional organic crystals renormalized phonon spectrum peierls critical temperature |
| title | ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION |
| title_full | ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION |
| title_fullStr | ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION |
| title_full_unstemmed | ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION |
| title_short | ANALYSIS OF PHONONS BEHAVIOR IN QUASI-ONE-DIMENSIONAL CRYSTALS OF TTT(TCNQ)2 NEAR THE PEIERLS STRUCTURAL TRANSITION IN A 3D APPROXIMATION |
| title_sort | analysis of phonons behavior in quasi one dimensional crystals of ttt tcnq 2 near the peierls structural transition in a 3d approximation |
| topic | metal-insulator transition organic materials quasi-one-dimensional organic crystals renormalized phonon spectrum peierls critical temperature |
| url | https://press.utm.md/index.php/jes/article/view/2023-30-3-01/01-pdf |
| work_keys_str_mv | AT andronicsilvia analysisofphononsbehaviorinquasionedimensionalcrystalsofttttcnq2nearthepeierlsstructuraltransitionina3dapproximation AT sanduleacionel analysisofphononsbehaviorinquasionedimensionalcrystalsofttttcnq2nearthepeierlsstructuraltransitionina3dapproximation |