A Brief Description
An exact calculation of the vibrational dynamics of the incommensurate phase of the infinite Frenkel-Kontorova(FK) chain has been studied using the Real Space Green's-function technique. Our calculation reveals all the characteristic features seen in experiments such as Goldstone modes, zone-folding, quasi-gaps, quasi-zone centers, dispersionless phason modes, etc. We have also examined the effect of parameters defining the incommensurate nature of the system on the incommensurate-commensurate transition, dispersion relation, etc.
Recent Publications in Incommensurate Structures
- N.S. Luo, S.Y. Wu, and C.S. Jayanthi, Structure and Dynamics of the Incommensurate Phase of an Infinite Frenkel Kontorova Chain, Phys. Rev. B55, 1748 (1997).