Phonon Dynamics and Structural Instability in Qusai One-Dimensional Conductors with Interchain Interaction
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The structural energy, the phonon dynamics, and the stability condition inctuasi one-dimensional (1-D) conductors are discussed with the r>seudor>otentialmodel includinn the Coulombic interchain interaction. The following cases areconsidered; (A) sinsle kind and (B) two kinds of chains in crystal. FOR- case (A),the type of mode coupling and the phonon dispersion are investigated in variousstates (7 >IP With and W1thOUt QLRO and T< Tt With LRO), llld the relatmonof the structural energy to the phonon dispersion is indicated. When only onekind of chains is in the ordered state in case (B), the mode coupling also takesplace in the disordered chain by the effect of the ordered chain and the nature ofthe phonon modes is clarified. The sliding motion of CDW in individual chainin 3-D crystals is also discussed.
- 社団法人日本物理学会の論文
- 1981-03-15
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