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    Quadrupolar excitons in MoSe2 bilayers by Jakub Jasiński, Joakim Hagel, Samuel Brem, Edith Wietek, Takashi Taniguchi, Kenji Watanabe, Alexey Chernikov, Nicolas Bruyant, Mateusz Dyksik, Alessandro Surrente, Michał Baranowski, Duncan K. Maude, Ermin Malic, Paulina Plochocka

    Published 2025-02-01
    “…Among the unconventional excitonic states, quadrupolar excitons—a superposition of two dipolar excitons with anti-aligned dipole moments—are of great interest for applications in quantum simulations and for the investigation of many-body physics. Here, we unambiguously demonstrate the emergence of quadrupolar excitons in natural MoSe2 homobilayers, whose energy shifts quadratically in electric field. …”
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    Anisotropic nonlinear optical responses of Ta2NiS5 flake towards ultrafast logic gates and secure all-optical information transmission by Yan Lei, Gong Ziyao, He Qinyong, Shen Dechao, Ge Anping, Dai Ye, Ma Guohong, Sun Liaoxin, Zhang Saifeng

    Published 2024-10-01
    “…Due to the low-symmetrical crystal structures, it possesses in-plane anisotropic physical properties. The optical absorption information of Ta2NiS5 is investigated by anisotropic linear absorption spectra, femtosecond laser intensity scanning (I-scan), and non-degenerate pump-probe technology. …”
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    Laser-induced coherent spin change due to spin-orbit coupling by In Cheol Yu, Jung Hyun Oh, Je-Ho Shim, Kab-Jin Kim, Byong-Guk Park, Dong-Hyun Kim, Kyoung-Whan Kim, Hyun-Woo Lee, Kyung-Jin Lee, Fabian Rotermund

    Published 2025-02-01
    “…Theoretical calculations reveal that the Co/Pt peak includes contributions from both coherent spin excitation and nonlocal transport whereas the Co peak contains the contribution from the coherent spin excitation exclusively, which is governed by anti-crossing physics. Our findings highlight the SOC-mediated coherent spin dynamics, advancing ultrafast spintronic technology.…”
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