A Theory of Structural Phase Transition in One-Dimensional Metallic Systems
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概要
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Here is presented a model for one-dimensional metallic systems which is basedon the pseudopotential theory. Each metallic chain has a finite size cross-sectionand has the band energy as well as the electrostatic energy, while the interactionbetween chains is assumed to be only electrostatic. When vibrational states of theatomic (Einstein) type are restricted to the zero- and one-quantum states, thephonon Hamiltonian in the I-D case is equal to the "Ising model with a transversefield" and existing exact solutions for this model can be used to discuss thestructural phase transition. The temperature-dependence of the Peierls instabilityarises both from the vibrational and the electronic freedoms, and a numericalcalculation is made for the latter.
- 社団法人日本物理学会の論文
- 1978-02-15
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