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Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2 heterostructures

Author

Listed:
  • Elena Blundo

    (Sapienza University of Rome)

  • Federico Tuzi

    (Sapienza University of Rome)

  • Salvatore Cianci

    (Sapienza University of Rome)

  • Marzia Cuccu

    (Sapienza University of Rome)

  • Katarzyna Olkowska-Pucko

    (University of Warsaw)

  • Łucja Kipczak

    (University of Warsaw)

  • Giorgio Contestabile

    (Sapienza University of Rome)

  • Antonio Miriametro

    (Sapienza University of Rome)

  • Marco Felici

    (Sapienza University of Rome)

  • Giorgio Pettinari

    (National Research Council)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Adam Babiński

    (University of Warsaw)

  • Maciej R. Molas

    (University of Warsaw)

  • Antonio Polimeni

    (Sapienza University of Rome)

Abstract

Moiré excitons (MXs) are electron-hole pairs localised by the periodic (moiré) potential forming in two-dimensional heterostructures (HSs). MXs can be exploited, e.g., for creating nanoscale-ordered quantum emitters and achieving or probing strongly correlated electronic phases at relatively high temperatures. Here, we studied the exciton properties of WSe2/MoSe2 HSs from T = 6 K to room temperature using time-resolved and continuous-wave micro-photoluminescence also under a magnetic field. The exciton dynamics and emission lineshape evolution with temperature show clear signatures that MXs de-trap from the moiré potential and turn into free interlayer excitons (IXs) for temperatures above 100 K. The MX-to-IX transition is also apparent from the exciton magnetic moment reversing its sign when the moiré potential is not capable of localising excitons at elevated temperatures. Concomitantly, the exciton formation and decay times reduce drastically. Thus, our findings establish the conditions for a truly confined nature of the exciton states in a moiré superlattice with increasing temperature and photo-generated carrier density.

Suggested Citation

  • Elena Blundo & Federico Tuzi & Salvatore Cianci & Marzia Cuccu & Katarzyna Olkowska-Pucko & Łucja Kipczak & Giorgio Contestabile & Antonio Miriametro & Marco Felici & Giorgio Pettinari & Takashi Tanig, 2024. "Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2 heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-44739-9
    DOI: 10.1038/s41467-024-44739-9
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    1. Philipp Nagler & Mariana V. Ballottin & Anatolie A. Mitioglu & Fabian Mooshammer & Nicola Paradiso & Christoph Strunk & Rupert Huber & Alexey Chernikov & Peter C. M. Christianen & Christian Schüller &, 2017. "Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
    2. Zefang Wang & Daniel A. Rhodes & Kenji Watanabe & Takashi Taniguchi & James C. Hone & Jie Shan & Kin Fai Mak, 2019. "Evidence of high-temperature exciton condensation in two-dimensional atomic double layers," Nature, Nature, vol. 574(7776), pages 76-80, October.
    3. Yang Xu & Song Liu & Daniel A. Rhodes & Kenji Watanabe & Takashi Taniguchi & James Hone & Veit Elser & Kin Fai Mak & Jie Shan, 2020. "Correlated insulating states at fractional fillings of moiré superlattices," Nature, Nature, vol. 587(7833), pages 214-218, November.
    4. Kha Tran & Galan Moody & Fengcheng Wu & Xiaobo Lu & Junho Choi & Kyounghwan Kim & Amritesh Rai & Daniel A. Sanchez & Jiamin Quan & Akshay Singh & Jacob Embley & André Zepeda & Marshall Campbell & Trav, 2019. "Evidence for moiré excitons in van der Waals heterostructures," Nature, Nature, vol. 567(7746), pages 71-75, March.
    5. Fateme Mahdikhanysarvejahany & Daniel N. Shanks & Matthew Klein & Qian Wang & Michael R. Koehler & David G. Mandrus & Takashi Taniguchi & Kenji Watanabe & Oliver L. A. Monti & Brian J. LeRoy & John R., 2022. "Localized interlayer excitons in MoSe2–WSe2 heterostructures without a moiré potential," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    6. Kyle L. Seyler & Pasqual Rivera & Hongyi Yu & Nathan P. Wilson & Essance L. Ray & David G. Mandrus & Jiaqiang Yan & Wang Yao & Xiaodong Xu, 2019. "Signatures of moiré-trapped valley excitons in MoSe2/WSe2 heterobilayers," Nature, Nature, vol. 567(7746), pages 66-70, March.
    7. Emma C. Regan & Danqing Wang & Chenhao Jin & M. Iqbal Bakti Utama & Beini Gao & Xin Wei & Sihan Zhao & Wenyu Zhao & Zuocheng Zhang & Kentaro Yumigeta & Mark Blei & Johan D. Carlström & Kenji Watanabe , 2020. "Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices," Nature, Nature, vol. 579(7799), pages 359-363, March.
    8. Chun Ning Lau & Marc W. Bockrath & Kin Fai Mak & Fan Zhang, 2022. "Reproducibility in the fabrication and physics of moiré materials," Nature, Nature, vol. 602(7895), pages 41-50, February.
    9. Yanhao Tang & Lizhong Li & Tingxin Li & Yang Xu & Song Liu & Katayun Barmak & Kenji Watanabe & Takashi Taniguchi & Allan H. MacDonald & Jie Shan & Kin Fai Mak, 2020. "Simulation of Hubbard model physics in WSe2/WS2 moiré superlattices," Nature, Nature, vol. 579(7799), pages 353-358, March.
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