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. 2020 Aug 10;11:4003. doi: 10.1038/s41467-020-17464-2

Fig. 5. Vibration nature of the phonon flat band.

Fig. 5

a Kagome lattice with dotted lines denoting the directions in which the atomic movement is confined. The inner atoms are displaced according to the elementary localized deformation that comprises the flat band. b, Atom displacement resolved phonon band structure along x, y, and z-direction vibration for Co1, Co2, and Co3 corresponding to a. The spectral weight is reflected by the line thickness.