›› 2011, Vol. 30 ›› Issue (5): 20-20.
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Abstract: The lattice vibration equations of the onedimension diatomic chain with on-site potential are solved by numerical calculation.The vibration graphics of long wavelength acoustic modes with different onsite potential are presented.In the case of long wavelength acoustic modes,the displacements of the two atoms within each cell are no longer identical.
Key words: diatomic chain, on-site potential, vibration graphics
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https://dxwl.bnu.edu.cn/EN/Y2011/V30/I5/20
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