Infrared Magnetopolaritons in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>MoTe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> Monolayers
MoTe_{2} monolayers and bilayers are unique within the family of van der Waals materials since they pave the way toward atomically thin infrared light-matter quantum interfaces, potentially reaching the important telecommunication windows. Here, we report emergent exciton polaritons based on MoTe_{2} monolayers and bilayers in a low-temperature open microcavity in a joint experiment-theory study. Our experiments clearly evidence both the enhanced oscillator strength and enhanced luminescence of MoTe_{2} bilayers, signified by a 38% increase of the Rabi splitting and a strongly enhanced relaxation of polaritons to low-energy states. The latter is distinct from polaritons in MoTe_{2} monolayers, which feature a bottlenecklike relaxation inhibition. Both the polaritonic spin valley locking in monolayers and the spin-layer locking in bilayers are revealed via the Zeeman effect, which we map and control via the light-matter composition of our polaritonic resonances.
Authors
- Martin Esmann (ORCID: https://orcid.org/0000-0002-2329-9696)
- Christian Schneider (ORCID: https://orcid.org/0000-0001-7231-3266)
- M. Syperek (ORCID: https://orcid.org/0000-0002-5260-7360)
- Takashi Taniguchi (ORCID: https://orcid.org/0000-0002-1467-3105)
- Kenji Watanabe (ORCID: https://orcid.org/0000-0003-3701-8119)
- Lukas Lackner (ORCID: https://orcid.org/0000-0002-7970-0450)
- Ermin Malić (ORCID: https://orcid.org/0000-0003-1434-9003)
- Roberto Rosati (ORCID: https://orcid.org/0000-0002-2514-3425)
- Jamie M. Fitzgerald (ORCID: https://orcid.org/0000-0003-3652-0676)
- Falk Eilenberger (ORCID: https://orcid.org/0000-0002-4646-2484)
- Bo Han (ORCID: https://orcid.org/0000-0002-6562-6333)
Institutions
- Wrocław University of Science and Technology (PL)
- Carl von Ossietzky Universität Oldenburg (DE)
- Philipps University of Marburg (DE)
- National Institute for Materials Science (JP)
- Fraunhofer Institute for Applied Optics and Precision Engineering (DE)
- Friedrich Schiller University Jena (DE)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1103/physrevlett.134.076902
- Citations
- 5
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.59
Funders
- Alexander von Humboldt-Stiftung
- Carl von Ossietzky Universität Oldenburg
- Deutsche Forschungsgemeinschaft
- Ministry of Education, Culture, Sports, Science and Technology
- Bundesministerium für Bildung und Forschung
- Narodowe Centrum Nauki
- Japan Society for the Promotion of Science