Interplay of Energy and Charge Transfer in WSe2/CrSBr Heterostructures
Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide van der Waals heterostructures (vdWHs) composed of transition-metal dichalcogenides (TMDs) and layered magnetic semiconductors offer great opportunities to manipulate the exciton and valley properties of TMDs. Here, we present magneto-photoluminescence (PL) studies in a WSe 2 monolayer (ML) on a CrSBr crystal, an anisotropic layered antiferromagnetic semiconductor. Our results reveal the unique behavior of each of the ML-WSe 2 PL peaks under a magnetic field that is distinct from the pristine case. An intriguing feature is the clear enhancement of the PL intensity that we observe each time the external magnetic field tunes the energy of an exciton in CrSBr into resonance with one of the optical states of WSe 2 . This result suggests a magnetic field-controlled resonant energy transfer (RET) beyond other effects reported in similar structures. Our work provides deep insight into the importance of different mechanisms in magnetic vdWHs and underscores its great potential for light harvesting and emission enhancement of two-dimensional materials.
Source: Nano Letters
Authors: José Roberto de Toledo, Caique Serati de Brito, Barbara L. T. Rosa, Alisson R. Cadore, César Ricardo Rabahi, Paulo E. Faria Junior, Ana Carolina Ferreira de Brito, Talieh S. Ghiasi, Josep Ingla-Aynés, Christian Schüller, Herre S. J. van der Zant, Stephan Reitzenstein, Ingrid D. Barcelos, Florian Dirnberger, Yara Galvão Gobato
Institutions: Universidade Federal de São Carlos, Universidade Federal de Mato Grosso, Brazilian Center for Research in Energy and Materials, Laboratório Nacional de Nanotecnologia, University of Central Florida, Brazilian Synchrotron Light Laboratory, Delft University of Technology, University of Regensburg, Munich Center for Quantum Science and Technology, Technical University of Munich
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funders: Deutsche Forschungsgemeinschaft, Fundação de Amparo à Pesquisa do Estado de São Paulo, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Conselho Nacional de Desenvolvimento Científico e Tecnológico, H2020 Future and Emerging Technologies, HORIZON EUROPE Marie Sklodowska-Curie Actions
Awards: G1124031693, G1284534913, G1575856863, Quantum Spintronics in Magnetic Graphene, G2163844326, G2336638590, G2445884195, G2779470855, Effect of Moiré pattern on physical properties of twisted van der Waals heterostructures, G4005316386, Kontrolle über magnetische Exzitonen in van der Waals magnetischen Materialien durch optische Kopplung, SPin Research IN Graphene, G5666349887, G6086124669, Optical properties of van der Waals heterostructures, G7900251987, van der Waals heterostructures for optoeletronics and quantum technology, G8876680065
OpenAlex ID: W4413425980