Ultrafast Two-dimensional Electronic Spectroscopy reveals Phonon-driven Exciton Rabi oscillations in Halide Perovskites

Xuan Trung Nguyen; Katrin Winte; Daniel Timmer; Yevgeny Rakita; David Cahen; Michael Lorke; Frank Jahnke; Christoph Lienau; Antonietta De Sio

doi:10.1364/UP.2022.Th3A.3

The International Conference on Ultrafast Phenomena (UP) 2022
Technical Digest Series (Optica Publishing Group, 2022),
paper Th3A.3
•https://doi.org/10.1364/UP.2022.Th3A.3

Ultrafast Two-dimensional Electronic Spectroscopy reveals Phonon-driven Exciton Rabi oscillations in Halide Perovskites

Xuan Trung Nguyen, Katrin Winte, Daniel Timmer, Yevgeny Rakita, David Cahen, Michael Lorke, Frank Jahnke, Christoph Lienau, and Antonietta De Sio

International Conference on Ultrafast Phenomena 2022

Montreal, Quebec Canada
18–22 July 2022
ISBN: 978-1-957171-07-4

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Ultrafast Spectroscopy III (Th3A)

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X. T. Nguyen, K. Winte, D. Timmer, Y. Rakita, D. Cahen, M. Lorke, F. Jahnke, C. Lienau, and A. De Sio, "Ultrafast Two-dimensional Electronic Spectroscopy reveals Phonon-driven Exciton Rabi oscillations in Halide Perovskites," in The International Conference on Ultrafast Phenomena (UP) 2022, F. Légaré, T. Tahara, J. Biegert, T. Brixner, and N. Dudovich, eds., Technical Digest Series (Optica Publishing Group, 2022), paper Th3A.3.

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Abstract

We report persistent 100-fs period Rabi oscillations between 1s and 2p excitons in halide perovskite single crystals driven by off-resonant low-frequency phonon modes. This contrasts with prevailing models for the electron-phonon coupling in these materials.

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