التفاصيل البيبلوغرافية
| العنوان: |
Bright and Dark Exciton Coherent Coupling and Hybridization Enabled by External Magnetic Fields |
| المؤلفون: |
Varun Mapara (12054370), Arup Barua (12054373), Volodymyr Turkowski (2071282), M. Tuan Trinh (1395133), Christopher Stevens (1737907), Hengzhou Liu (11027477), Florence A. Nugera (12054376), Nalaka Kapuruge (9155522), Humberto Rodriguez Gutierrez (12054379), Fang Liu (13271), Xiaoyang Zhu (138556), Dmitry Semenov (9419228), Stephen A. McGill (1586509), Nihar Pradhan (12054382), David J. Hilton (1835917), Denis Karaiskaj (5211512) |
| سنة النشر: |
2022 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Medicine, Physiology, Biotechnology, Evolutionary Biology, Ecology, Space Science, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, atomically thin semiconductors, plane energetically shift, coherent quantum beating, magnetic fields perpendicular, k ′ valleys, dark excitons relative, 2 , magnetic fields, dark excitons, plane lead, coherent dephasing, well captured, partial brightening, optical excitations, observations show, experimental results, excited simultaneously, dependent measurements |
| الوصف: |
Magnetic field- and polarization-dependent measurements on bright and dark excitons in monolayer WSe 2 combined with time-dependent density functional theory calculations reveal intriguing phenomena. Magnetic fields up to 25 T parallel to the WSe 2 plane lead to a partial brightening of the energetically lower lying exciton, leading to an increase of the dephasing time. Using a broadband femtosecond pulse excitation, the bright and partially allowed excitonic state can be excited simultaneously, resulting in coherent quantum beating between these states. The magnetic fields perpendicular to the WSe 2 plane energetically shift the bright and dark excitons relative to each other, resulting in the hybridization of the states at the K and K′ valleys. Our experimental results are well captured by time-dependent density functional theory calculations. These observations show that magnetic fields can be used to control the coherent dephasing and coupling of the optical excitations in atomically thin semiconductors. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Bright_and_Dark_Exciton_Coherent_Coupling_and_Hybridization_Enabled_by_External_Magnetic_Fields/19131340Test |
| DOI: |
10.1021/acs.nanolett.1c04667.s001 |
| الإتاحة: |
https://doi.org/10.1021/acs.nanolett.1c04667.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.6BE272D8 |
| قاعدة البيانات: |
BASE |
