IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v14y2023i1d10.1038_s41467-023-37125-4.html
   My bibliography  Save this article

Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T

Author

Listed:
  • Akihiko Ikeda

    (University of Tokyo
    University of Electro-Communications)

  • Yasuhiro H. Matsuda

    (University of Tokyo)

  • Keisuke Sato

    (Ibaraki College)

  • Yuto Ishii

    (University of Tokyo)

  • Hironobu Sawabe

    (University of Tokyo)

  • Daisuke Nakamura

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • Shojiro Takeyama

    (University of Tokyo)

  • Joji Nasu

    (Tohoku University
    PRESTO, Japan Science and Technology Agency)

Abstract

Bose-Einstein condensation of electron-hole pairs, exciton condensation, has been effortfully investigated since predicted 60 years ago. Irrefutable evidence has still been lacking due to experimental difficulties in verifying the condensation of the charge neutral and non-magnetic spin-singlet excitons. Whilst, condensation of spin-triplet excitons is a promising frontier because spin supercurrent and spin-Seebeck effects will be observable. A canonical cobaltite LaCoO3 under very high magnetic fields is a propitious candidate, yet to be verified. Here, we unveil the exotic phase diagram of LaCoO3 up to 600 T generated using the electromagnetic flux compression method and the state-of-the-art magnetostriction gauge. We found the continuous magnetostriction curves and a bending structure, which suggest the emergence of two distinct spin-triplet exciton condensates. By constructing a phenomenological model, we showed that quantum fluctuations of excitons are crucial for the field-induced successive transitions. The spin-triplet exciton condensation in a cobaltite, which is three-dimensional and thermally equilibrated, opens up a novel venue for spintronics technologies with spin-supercurrent such as a spin Josephson junction.

Suggested Citation

  • Akihiko Ikeda & Yasuhiro H. Matsuda & Keisuke Sato & Yuto Ishii & Hironobu Sawabe & Daisuke Nakamura & Shojiro Takeyama & Joji Nasu, 2023. "Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T," Nature Communications, Nature, vol. 14(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37125-4
    DOI: 10.1038/s41467-023-37125-4
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-023-37125-4
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-023-37125-4?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Y. F. Lu & H. Kono & T. I. Larkin & A. W. Rost & T. Takayama & A. V. Boris & B. Keimer & H. Takagi, 2017. "Zero-gap semiconductor to excitonic insulator transition in Ta2NiSe5," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    2. C. W. Lai & N. Y. Kim & S. Utsunomiya & G. Roumpos & H. Deng & M. D. Fraser & T. Byrnes & P. Recher & N. Kumada & T. Fujisawa & Y. Yamamoto, 2007. "Coherent zero-state and π-state in an exciton–polariton condensate array," Nature, Nature, vol. 450(7169), pages 529-532, November.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Cheng Chen & Weichen Tang & Xiang Chen & Zhibo Kang & Shuhan Ding & Kirsty Scott & Siqi Wang & Zhenglu Li & Jacob P. C. Ruff & Makoto Hashimoto & Dong-Hui Lu & Chris Jozwiak & Aaron Bostwick & Eli Rot, 2023. "Anomalous excitonic phase diagram in band-gap-tuned Ta2Ni(Se,S)5," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. D. G. Mazzone & Y. Shen & H. Suwa & G. Fabbris & J. Yang & S.-S. Zhang & H. Miao & J. Sears & Ke Jia & Y. G. Shi & M. H. Upton & D. M. Casa & X. Liu & Jian Liu & C. D. Batista & M. P. M. Dean, 2022. "Antiferromagnetic excitonic insulator state in Sr3Ir2O7," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Matthew D. Watson & Alex Louat & Cephise Cacho & Sungkyun Choi & Young Hee Lee & Michael Neumann & Gideok Kim, 2023. "Spectral signatures of a unique charge density wave in Ta2NiSe7," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    4. Mingxiu Liu & Jingxuan Wei & Liujian Qi & Junru An & Xingsi Liu & Yahui Li & Zhiming Shi & Dabing Li & Kostya S. Novoselov & Cheng-Wei Qiu & Shaojuan Li, 2024. "Photogating-assisted tunneling boosts the responsivity and speed of heterogeneous WSe2/Ta2NiSe5 photodetectors," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    5. Marios H. Michael & Sheikh Rubaiat Ul Haque & Lukas Windgaetter & Simone Latini & Yuan Zhang & Angel Rubio & Richard D. Averitt & Eugene Demler, 2024. "Photonic time-crystalline behaviour mediated by phonon squeezing in Ta2NiSe5," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    6. Ruishi Qi & Andrew Y. Joe & Zuocheng Zhang & Yongxin Zeng & Tiancheng Zheng & Qixin Feng & Jingxu Xie & Emma Regan & Zheyu Lu & Takashi Taniguchi & Kenji Watanabe & Sefaattin Tongay & Michael F. Cromm, 2023. "Thermodynamic behavior of correlated electron-hole fluids in van der Waals heterostructures," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    7. Yanze Feng & Runkun Chen & Junbo He & Liujian Qi & Yanan Zhang & Tian Sun & Xudan Zhu & Weiming Liu & Weiliang Ma & Wanfu Shen & Chunguang Hu & Xiaojuan Sun & Dabing Li & Rongjun Zhang & Peining Li & , 2023. "Visible to mid-infrared giant in-plane optical anisotropy in ternary van der Waals crystals," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37125-4. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.