Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning
Summary: Understanding the optothermal physics of quantum materials will enable the efficient design of next-generation photonic and superconducting circuits. Anharmonic phonon dynamics is central to strongly interacting optothermal physics. This is because the pressure of a gas of anharmonic phonon...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223012518 |
| _version_ | 1797774574181416960 |
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| author | Chisom Okeke Isaac Juma Antonio Cobarrubia Nicholas Schottle Hisham Maddah Mansour Mortazavi Sanjay K. Behura |
| author_facet | Chisom Okeke Isaac Juma Antonio Cobarrubia Nicholas Schottle Hisham Maddah Mansour Mortazavi Sanjay K. Behura |
| author_sort | Chisom Okeke |
| collection | DOAJ |
| description | Summary: Understanding the optothermal physics of quantum materials will enable the efficient design of next-generation photonic and superconducting circuits. Anharmonic phonon dynamics is central to strongly interacting optothermal physics. This is because the pressure of a gas of anharmonic phonons is temperature dependent. Phonon-phonon and electron-phonon quantum interactions contribute to the anharmonic phonon effect. Here we have studied the optothermal properties of physically exfoliated WS2 van der Waals crystal via temperature-dependent Raman spectroscopy and machine learning strategies. This fundamental investigation will lead to unveiling the dependence of temperature on in-plane and out-of-plane Raman shifts (Raman thermometry) of WS2 to study the thermal conductivity, hot carrier diffusion coefficient, and thermal expansion coefficient. |
| first_indexed | 2024-03-12T22:22:09Z |
| format | Article |
| id | doaj.art-d088635b1db741ed91fad193c9848535 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-12T22:22:09Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-d088635b1db741ed91fad193c98485352023-07-23T04:55:49ZengElsevieriScience2589-00422023-07-01267107174Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learningChisom Okeke0Isaac Juma1Antonio Cobarrubia2Nicholas Schottle3Hisham Maddah4Mansour Mortazavi5Sanjay K. Behura6Department of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United StatesDepartment of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United StatesDepartment of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States; Computational Science Research Center, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United StatesDepartment of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United StatesDepartment of Chemical Engineering, King Abdulaziz University, Rabigh 21911, Saudi ArabiaDepartment of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United StatesDepartment of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States; Corresponding authorSummary: Understanding the optothermal physics of quantum materials will enable the efficient design of next-generation photonic and superconducting circuits. Anharmonic phonon dynamics is central to strongly interacting optothermal physics. This is because the pressure of a gas of anharmonic phonons is temperature dependent. Phonon-phonon and electron-phonon quantum interactions contribute to the anharmonic phonon effect. Here we have studied the optothermal properties of physically exfoliated WS2 van der Waals crystal via temperature-dependent Raman spectroscopy and machine learning strategies. This fundamental investigation will lead to unveiling the dependence of temperature on in-plane and out-of-plane Raman shifts (Raman thermometry) of WS2 to study the thermal conductivity, hot carrier diffusion coefficient, and thermal expansion coefficient.http://www.sciencedirect.com/science/article/pii/S2589004223012518Applied sciencesmachine learningNanomaterials |
| spellingShingle | Chisom Okeke Isaac Juma Antonio Cobarrubia Nicholas Schottle Hisham Maddah Mansour Mortazavi Sanjay K. Behura Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning iScience Applied sciences machine learning Nanomaterials |
| title | Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning |
| title_full | Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning |
| title_fullStr | Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning |
| title_full_unstemmed | Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning |
| title_short | Probing anharmonic phonons in WS2 van der Waals crystal by Raman spectroscopy and machine learning |
| title_sort | probing anharmonic phonons in ws2 van der waals crystal by raman spectroscopy and machine learning |
| topic | Applied sciences machine learning Nanomaterials |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223012518 |
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