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Generalized many-body exciton g-factors: magnetic hybridization and non-monotonic Rydberg series in monolayer WSe2
Paulo Eduardo, de Faria Junior
(2025)
Generalized many-body exciton g-factors: magnetic hybridization and non-monotonic Rydberg series in monolayer WSe2.
arXiv.
(Im Druck)
Veröffentlichungsdatum dieses Volltextes: 12 Nov 2025 15:46
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.78132
Zusammenfassung
Magneto-optics of low dimensional semiconductors, such as monolayer transition metal dichalcogenides, offers a vast playground for exploring complex quantum phenomena. However, current ab initio approaches fail to capture important experimental observations related to brightening of excitonic levels and their g-factor dependence. Here, we develop a robust and general first principles framework ...
Magneto-optics of low dimensional semiconductors, such as monolayer transition metal dichalcogenides, offers a vast playground for exploring complex quantum phenomena. However, current ab initio approaches fail to capture important experimental observations related to brightening of excitonic levels and their g-factor dependence. Here, we develop a robust and general first principles framework for many-body exciton g-factors by incorporating off-diagonal terms for the spin and orbital angular momenta of single-particle bands and many-body states for magnetic fields pointing in arbitrary spatial directions. We implement our framework using many-body perturbation theory via the GW-Bethe-Salpeter equation (BSE) and supplement our analysis with robust symmetry-based models, establishing a fruitful synergy between many-body GW-BSE and group theory. Focusing on the archetypal monolayer WSe_2, we accurately reproduce the known results of the low-energy excitons including the Zeeman splitting and the dark/grey exciton brightening. Furthermore, our theory naturally reveals fundamental physical mechanisms of magnetic-field hybridization of higher-energy excitons (s- and p-like) and resolves the long-standing puzzle of the experimentally measured non-monotonic Rydberg series (1s-4s) of exciton g-factors. Our framework offers a comprehensive approach to investigate, rationalize, and predict the non-trivial interplay between magnetic fields, angular momenta, and many-body exciton physics in van der Waals systems.
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Verknüpfung von Datensätzen
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Paulo Eduardo, de Faria Junior
(2025)
Generalized many-body exciton g-factors: magnetic hybridization and non-monotonic Rydberg series in monolayer WSe2.
arXiv.
(Im Druck)
[Gegenwärtig angezeigt]-
Faria Junior, Paulo E.
, Hernangómez-Pérez, Daniel
, Amit, Tomer
, Fabian, Jaroslav
und Refaely-Abramson, Sivan
(2025)
Generalized many-body exciton g factors: Magnetic hybridization and nonmonotonic Rydberg series in monolayer WSe₂.
Physical Review B 112, L241404.
-
Details
| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | arXiv | ||||
| Datum | 2 Juni 2025 | ||||
| Institutionen | Physik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Jaroslav Fabian | ||||
| Projekte |
Gefördert von:
Deutsche Forschungsgemeinschaft (DFG)
(314695032)
| ||||
| Identifikationsnummer |
| ||||
| Stichwörter / Keywords | Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Materials Science (cond-mat.mtrl-sci) | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Im Druck | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-781329 | ||||
| Dokumenten-ID | 78132 |
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