IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v16y2025i1d10.1038_s41467-025-58971-4.html
   My bibliography  Save this article

Gapless dispersive continuum in a modulated quantum kagome antiferromagnet

Author

Listed:
  • Asiri Thennakoon

    (University of Virginia)

  • Ryouga Yokokura

    (Kyoto University)

  • Yang Yang

    (University of Virginia)

  • Ryoichi Kajimoto

    (Japan Atomic Energy Agency)

  • Mitsutaka Nakamura

    (Japan Atomic Energy Agency)

  • Masahiro Hayashi

    (Kyoto University)

  • Chishiro Michioka

    (Kyoto University)

  • Gia-Wei Chern

    (University of Virginia)

  • Collin Broholm

    (The Johns Hopkins University)

  • Hiroaki Ueda

    (Shimane University)

  • Seung-Hun Lee

    (University of Virginia)

Abstract

The pursuit of quantum spin liquid (QSL) states in condensed matter physics has drawn attention to kagome antiferromagnets (AFM) where a two-dimensional corner-sharing network of triangles frustrates conventional magnetic orders. While quantum kagome AFMs based on Cu2+ (3d9, s = ½) ions have been extensively studied, there is so far little work beyond copper-based systems. Here we present our bulk magnetization, specific heat and neutron scattering studies on single crystals of a new titanium fluorides Cs8RbK3Ti12F48 where Ti3+ (3d1, s = ½) ions form a modulated quantum kagome antiferromagnet that does not order magnetically down to 1.5 K. Our comprehensive map of the dynamic response function $${{{\boldsymbol{S}}}}({{{\bf{Q}}}},\hslash {{{\boldsymbol{\omega }}}})$$ S ( Q , ℏ ω ) acquired at 1.5 K where the heat capacity is T-linear reveals a dispersive continuum emanating from soft lines that extend along (100). The data indicate fractionalized spinon-like excitations with quasi-one-dimensional dispersion within a quasi-two-dimensional spin system.

Suggested Citation

  • Asiri Thennakoon & Ryouga Yokokura & Yang Yang & Ryoichi Kajimoto & Mitsutaka Nakamura & Masahiro Hayashi & Chishiro Michioka & Gia-Wei Chern & Collin Broholm & Hiroaki Ueda & Seung-Hun Lee, 2025. "Gapless dispersive continuum in a modulated quantum kagome antiferromagnet," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58971-4
    DOI: 10.1038/s41467-025-58971-4
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-025-58971-4
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-025-58971-4?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. Tian-Heng Han & Joel S. Helton & Shaoyan Chu & Daniel G. Nocera & Jose A. Rodriguez-Rivera & Collin Broholm & Young S. Lee, 2012. "Fractionalized excitations in the spin-liquid state of a kagome-lattice antiferromagnet," Nature, Nature, vol. 492(7429), pages 406-410, December.
    2. Leon Balents, 2010. "Spin liquids in frustrated magnets," Nature, Nature, vol. 464(7286), pages 199-208, March.
    3. G. Misguich & P. Sindzingre, 2007. "Magnetic susceptibility and specific heat of the spin- ${\frac{1}{2}}$ Heisenberg model on the kagome lattice and experimental data on ZnCu 3 (OH) 6 Cl 2," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 59(3), pages 305-309, October.
    4. Yuesheng Li & Devashibhai Adroja & David Voneshen & Robert I. Bewley & Qingming Zhang & Alexander A. Tsirlin & Philipp Gegenwart, 2017. "Nearest-neighbour resonating valence bonds in YbMgGaO4," Nature Communications, Nature, vol. 8(1), pages 1-6, August.
    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. Schmidt, M. & Zimmer, F.M. & Magalhaes, S.G., 2015. "Spin glass induced by infinitesimal disorder in geometrically frustrated kagome lattice," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 438(C), pages 416-423.
    2. Yong Hu & Junzhang Ma & Yinxiang Li & Yuxiao Jiang & Dariusz Jakub Gawryluk & Tianchen Hu & Jérémie Teyssier & Volodymyr Multian & Zhouyi Yin & Shuxiang Xu & Soohyeon Shin & Igor Plokhikh & Xinloong H, 2024. "Phonon promoted charge density wave in topological kagome metal ScV6Sn6," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Shingo Toyoda & Manfred Fiebig & Lea Forster & Taka-hisa Arima & Yoshinori Tokura & Naoki Ogawa, 2021. "Writing of strain-controlled multiferroic ribbons into MnWO4," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    4. Bin Gao & Tong Chen & Xiao-Chuan Wu & Michael Flynn & Chunruo Duan & Lebing Chen & Chien-Lung Huang & Jesse Liebman & Shuyi Li & Feng Ye & Matthew B. Stone & Andrey Podlesnyak & Douglas L. Abernathy &, 2023. "Diffusive excitonic bands from frustrated triangular sublattice in a singlet-ground-state system," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    5. Daniel Lozano-Gómez & Yasir Iqbal & Matthias Vojta, 2024. "A classical chiral spin liquid from chiral interactions on the pyrochlore lattice," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    6. Tao Hong & Tao Ying & Qing Huang & Sachith E. Dissanayake & Yiming Qiu & Mark M. Turnbull & Andrey A. Podlesnyak & Yan Wu & Huibo Cao & Yaohua Liu & Izuru Umehara & Jun Gouchi & Yoshiya Uwatoko & Masa, 2022. "Evidence for pressure induced unconventional quantum criticality in the coupled spin ladder antiferromagnet C9H18N2CuBr4," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    7. Subhasis Samanta & Hwiwoo Park & Chanhyeon Lee & Sungmin Jeon & Hengbo Cui & Yong-Xin Yao & Jungseek Hwang & Kwang-Yong Choi & Heung-Sik Kim, 2024. "Emergence of flat bands and ferromagnetic fluctuations via orbital-selective electron correlations in Mn-based kagome metal," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    8. Saizheng Cao & Chenchao Xu & Hiroshi Fukui & Taishun Manjo & Ying Dong & Ming Shi & Yang Liu & Chao Cao & Yu Song, 2023. "Competing charge-density wave instabilities in the kagome metal ScV6Sn6," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    9. Boqin Song & Tianping Ying & Xianxin Wu & Wei Xia & Qiangwei Yin & Qinghua Zhang & Yanpeng Song & Xiaofan Yang & Jiangang Guo & Lin Gu & Xiaolong Chen & Jiangping Hu & Andreas P. Schnyder & Hechang Le, 2023. "Anomalous enhancement of charge density wave in kagome superconductor CsV3Sb5 approaching the 2D limit," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    10. Xiaohu Zheng & Zheng-Xin Liu & Cuiwei Zhang & Huaxue Zhou & Chongli Yang & Youguo Shi & Katsumi Tanigaki & Rui-Rui Du, 2024. "Incommensurate charge super-modulation and hidden dipole order in layered kitaev material α-RuCl3," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    11. Penghao Zhu & Shi Feng & Kang Wang & Tao Xiang & Nandini Trivedi, 2025. "Emergent quantum Majorana metal from a chiral spin liquid," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    12. Han Li & Enze Lv & Ning Xi & Yuan Gao & Yang Qi & Wei Li & Gang Su, 2024. "Magnetocaloric effect of topological excitations in Kitaev magnets," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    13. Sen Zhou & Ziqiang Wang, 2022. "Chern Fermi pocket, topological pair density wave, and charge-4e and charge-6e superconductivity in kagomé superconductors," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    14. Ying Xiang & Qing Li & Yongkai Li & Wei Xie & Huan Yang & Zhiwei Wang & Yugui Yao & Hai-Hu Wen, 2021. "Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    15. Q. Stahl & T. Ritschel & G. Garbarino & F. Cova & A. Isaeva & T. Doert & J. Geck, 2024. "Pressure-tuning of α-RuCl3 towards a quantum spin liquid," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    16. D. Subires & A. Korshunov & A. H. Said & L. Sánchez & Brenden R. Ortiz & Stephen D. Wilson & A. Bosak & S. Blanco-Canosa, 2023. "Order-disorder charge density wave instability in the kagome metal (Cs,Rb)V3Sb5," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    17. N. D. Andriushin & S. E. Nikitin & Ø. S. Fjellvåg & J. S. White & A. Podlesnyak & D. S. Inosov & M. C. Rahn & M. Schmidt & M. Baenitz & A. S. Sukhanov, 2025. "Observation of the spiral spin liquid in a triangular-lattice material," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    18. Youngsu Choi & Suheon Lee & Je-Ho Lee & Seungyeol Lee & Maeng-Je Seong & Kwang-Yong Choi, 2021. "Bosonic spinons in anisotropic triangular antiferromagnets," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    19. Alejandro Lopez-Bezanilla & Jack Raymond & Kelly Boothby & Juan Carrasquilla & Cristiano Nisoli & Andrew D. King, 2023. "Kagome qubit ice," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    20. A. Pustogow & Y. Kawasugi & H. Sakurakoji & N. Tajima, 2023. "Chasing the spin gap through the phase diagram of a frustrated Mott insulator," Nature Communications, Nature, vol. 14(1), pages 1-6, 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:16:y:2025:i:1:d:10.1038_s41467-025-58971-4. 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.