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Theoretical prediction of a strongly correlated Dirac metal

Author

Listed:
  • I. I. Mazin

    (Code 6393, Naval Research Laboratory)

  • Harald O. Jeschke

    (Institut für Theoretische Physik, Goethe-Universität Frankfurt)

  • Frank Lechermann

    (I. Institut für Theoretische Physik, Universität Hamburg)

  • Hunpyo Lee

    (Institut für Theoretische Physik, Goethe-Universität Frankfurt)

  • Mario Fink

    (Institut für Theoretische Physik I, Universität Würzburg, am Hubland)

  • Ronny Thomale

    (Institut für Theoretische Physik I, Universität Würzburg, am Hubland)

  • Roser Valentí

    (Institut für Theoretische Physik, Goethe-Universität Frankfurt)

Abstract

Recently, the most intensely studied objects in the electronic theory of solids have been strongly correlated systems and graphene. However, the fact that the Dirac bands in graphene are made up of sp2 electrons, which are subject to neither strong Hubbard repulsion U nor strong Hund’s rule coupling J, creates certain limitations in terms of novel, interaction-induced physics that could be derived from Dirac points. Here we propose GaCu3(OH)6Cl2 (Ga-substituted herbertsmithite) as a correlated Dirac–Kagome metal combining Dirac electrons, strong interactions and frustrated magnetic interactions. Using density functional theory, we calculate its crystallographic and electronic properties, and observe that it has symmetry-protected Dirac points at the Fermi level. Its many-body physics is diverse, with possible charge, magnetic and superconducting instabilities. Through a combination of various many-body methods we study possible symmetry-lowering phase transitions such as Mott-Hubbard, charge or magnetic ordering, and unconventional superconductivity, which in this compound assumes an f-wave symmetry.

Suggested Citation

  • I. I. Mazin & Harald O. Jeschke & Frank Lechermann & Hunpyo Lee & Mario Fink & Ronny Thomale & Roser Valentí, 2014. "Theoretical prediction of a strongly correlated Dirac metal," Nature Communications, Nature, vol. 5(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5261
    DOI: 10.1038/ncomms5261
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    Cited by:

    1. Zhicheng Jiang & Zhengtai Liu & Haiyang Ma & Wei Xia & Zhonghao Liu & Jishan Liu & Soohyun Cho & Yichen Yang & Jianyang Ding & Jiayu Liu & Zhe Huang & Yuxi Qiao & Jiajia Shen & Wenchuan Jing & Xiangqi, 2023. "Flat bands, non-trivial band topology and rotation symmetry breaking in layered kagome-lattice RbTi3Bi5," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. 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.
    3. Hangyu Zhou & Manuel dos Santos Dias & Youguang Zhang & Weisheng Zhao & Samir Lounis, 2024. "Kagomerization of transition metal monolayers induced by two-dimensional hexagonal boron nitride," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    4. 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.
    5. Lebing Chen & Xiaokun Teng & Hengxin Tan & Barry L. Winn & Garrett E. Granroth & Feng Ye & D. H. Yu & R. A. Mole & Bin Gao & Binghai Yan & Ming Yi & Pengcheng Dai, 2024. "Competing itinerant and local spin interactions in kagome metal FeGe," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    6. Gan Liu & Xinran Ma & Kuanyu He & Qing Li & Hengxin Tan & Yizhou Liu & Jie Xu & Wenna Tang & Kenji Watanabe & Takashi Taniguchi & Libo Gao & Yaomin Dai & Hai-Hu Wen & Binghai Yan & Xiaoxiang Xi, 2022. "Observation of anomalous amplitude modes in the kagome metal CsV3Sb5," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    7. Li Huang & Xianghua Kong & Qi Zheng & Yuqing Xing & Hui Chen & Yan Li & Zhixin Hu & Shiyu Zhu & Jingsi Qiao & Yu-Yang Zhang & Haixia Cheng & Zhihai Cheng & Xianggang Qiu & Enke Liu & Hechang Lei & Xia, 2023. "Discovery and construction of surface kagome electronic states induced by p-d electronic hybridization in Co3Sn2S2," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    8. Abhishek Nag & Yiran Peng & Jiemin Li & S. Agrestini & H. C. Robarts & Mirian García-Fernández & A. C. Walters & Qi Wang & Qiangwei Yin & Hechang Lei & Zhiping Yin & Ke-Jin Zhou, 2022. "Correlation driven near-flat band Stoner excitations in a Kagome magnet," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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