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Showing 1–10 of 10 results
Advanced filters: Author: Qiangwei Yin Clear advanced filters

  • The kagome superconductor CsV3Sb5 exhibits a charge density wave (CDW) as well as superconductivity (SC). Here, the authors find that the CDW transition temperature decreases with decreasing sample thickness to 72 K at 27 atomic layers, but then unexpectedly increases to 120 K at 5 layers, an opposite trend to SC.

    • Boqin Song
    • Tianping Ying
    • Shiyan Li
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • In flat band materials, the ’flat’ dispersion of the electronic states mean that interactions between electrons can be strong, potentially leading to a variety of interesting magnetic and transport properties. Here, Nag et al study the Kagomé semimetal Co3Sn2S2, and show a nearly flat Stoner excitation dispersion, a clear indication of spin-polarized and flat electronic bands.

    • Abhishek Nag
    • Yiran Peng
    • Ke-Jin Zhou
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • A study reports unconventional superconductivity and a pair density wave in the kagome superconductor CsV3Sb5, and provides a basis for understanding the microscopic origin of correlated electronic states and superconductivity in vanadium-based kagome metals.

    • Hui Chen
    • Haitao Yang
    • Hong-Jun Gao
    Research
    Nature
    Volume: 599, P: 222-228

  • How electron correlation interplays with topological states remains rarely explored. Here, the authors report flat band arising due to electron correlations in magnetic Weyl semimetal Co3Sn2S2 from a combined optical-spectroscopy and simulation study.

    • Yueshan Xu
    • Jianzhou Zhao
    • Zhi-Guo Chen
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-11

  • Kagome lattice material Co3Sn2S2 is identified as a magnetic Weyl semimetal and its magnetic properties are less studied. Here, the authors observe localized spin-orbit polarons nucleated around single S-vacancies carrying a large diamagnetic orbital magnetism in Co3Sn2S2.

    • Yuqing Xing
    • Jianlei Shen
    • Hong-Jun Gao
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • By exploiting the geometric frustration of a kagome crystal lattice, it is possible to enhance electron localisation and engineer exotic electronic structures such as electronic flat bands. Here, the authors use inelastic neutron scattering to investigate the evolution of spin excitations modes for FeSn and CoSn, finding that an anomalous flat mode actually arises from the material used to fix the sample to the aluminium holder for analysis instead of the expected magnetic flat bands.

    • Yaofeng Xie
    • Lebing Chen
    • Pengcheng Dai
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-11

  • Kagome metals can house a complex interplay of competing phenomenon and there has been significant investigation into how to engineer the resultant properties, as well as understand the underlying physics. Here, the authors investigate the competition between charge density wave order and superconductivity for CsV3Sb5 using a combination of high-pressure and muon spin rotation measurements.

    • Ritu Gupta
    • Debarchan Das
    • Rustem Khasanov
    ResearchOpen Access
    Communications Physics
    Volume: 5, P: 1-8