samples . The error bars in represent the uncertainties in the determination of the VHS , superconductingA team led by Prof. He Junfeng from University of Science and Technology of China of the Chinese Academy of Sciences , in collaboration with Academician Gao Hongjun's team from CAS and other domestic and international research teams, has discovered the van Hove singularity at Fermi level in kagome superconductors and revealed its relationship with superconductivity.
However, in reality, VHS tends to deviate from the Fermi level of the material, resulting in very little effect on the low-energy states of the material. Therefore, it is important to find the suitable kagome material to explore the effect of VHS on
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