Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/97870
Type: Artigo de periódico
Title: Phason, Sound Wave And Their Coupling In The Quasi Two Dimensional Charge Density Wave
Author: Kurihara Y.
Abstract: Mixed modes of a phason and a sound wave are studied for the incommensurate charge density wave state. Our model Hamiltonian has two types of electrons. One type satisfies the nesting condition and the other one does not satisfy this condition and its single excitations do not have an energy gap even in the ordered state. The band structure of electrons takes the form of a two dimensional system. Both types of electrons can travel along layers, but can not transit between layers. The energy dispersion of these mixed modes retain a sound wave character in contrast with that of a linear chain model in which every single excitations has a gap. Near Tc and near T=0 the velocity of one of the mixed modes is equivalent to that of the sound wave of the normal state.
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Rights: fechado
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-77952765018&partnerID=40&md5=9c86c3018127790d7a162c9ae0f2eff5
Date Issue: 1980
Appears in Collections:Unicamp - Artigos e Outros Documentos

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