Academic Journal
Emergence of two distinct phase transitions in monolayer CoSe2 on graphene
| العنوان: | Emergence of two distinct phase transitions in monolayer CoSe2 on graphene |
|---|---|
| المؤلفون: | Tae Gyu Rhee, Nguyen Huu Lam, Yeong Gwang Kim, Minseon Gu, Jinwoong Hwang, Aaron Bostwick, Sung-Kwan Mo, Seung-Hyun Chun, Jungdae Kim, Young Jun Chang, Byoung Ki Choi |
| المصدر: | Nano Convergence, Vol 11, Iss 1, Pp 1-8 (2024) |
| بيانات النشر: | SpringerOpen, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Technology LCC:Chemical technology LCC:Biotechnology LCC:Science LCC:Physics |
| مصطلحات موضوعية: | Transition metal chalcogenides, Charge-density wave, Electron-boson coupling, Molecular beam epitaxy, Angle-resolved photoemission spectroscopy, Scanning tunneling microscopy, Technology, Chemical technology, TP1-1185, Biotechnology, TP248.13-248.65, Science, Physics, QC1-999 |
| الوصف: | Abstract Dimensional modifications play a crucial role in various applications, especially in the context of device miniaturization, giving rise to novel quantum phenomena. The many-body dynamics induced by dimensional modifications, including electron-electron, electron-phonon, electron-magnon and electron-plasmon coupling, are known to significantly affect the atomic and electronic properties of the materials. By reducing the dimensionality of orthorhombic CoSe2 and forming heterostructure with bilayer graphene using molecular beam epitaxy, we unveil the emergence of two types of phase transitions through angle-resolved photoemission spectroscopy and scanning tunneling microscopy measurements. We disclose that the 2 × 1 superstructure is associated with charge density wave induced by Fermi surface nesting, characterized by a transition temperature of 340 K. Additionally, another phase transition at temperature of 160 K based on temperature dependent gap evolution are observed with renormalized electronic structure induced by electron-boson coupling. These discoveries of the electronic and atomic modifications, influenced by electron-electron and electron-boson interactions, underscore that many-body physics play significant roles in understanding low-dimensional properties of non-van der Waals Co-chalcogenides and related heterostructures. Graphical Abstract |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2196-5404 |
| Relation: | https://doaj.org/toc/2196-5404 |
| DOI: | 10.1186/s40580-024-00427-4 |
| URL الوصول: | https://doaj.org/article/c1a97dc4b8bc490da8849bd456ed2b5e |
| رقم الانضمام: | edsdoj.1a97dc4b8bc490da8849bd456ed2b5e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21965404 |
|---|---|
| DOI: | 10.1186/s40580-024-00427-4 |