Competition between spin, charge, and bond waves in a Peierls-Hubbard model

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.3015· OSTI ID:286659

Venegas, P A ^[1]; Henriquez, C ^[2]; Roessler, J ^[3]

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1. Departamento de Fisica, Faculdade de Ciencias, Universidade Estadual Paulista, Campus Bauru, Av. Engenheiro Luis Coube s/n, 17033-360 Bauru, Sao Paulo (Brazil)
2. Comision Chilena de Energia Nuclear, Casilla 118--D, Santiago (Chile)
3. Departamento de Fisica, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago (Chile)

We study a one-dimensional extended Peierls-Hubbard model coupled to intracell and intercell phonons for a half-filled band. The calculations are made using the Hartree-Fock and adiabatic approximations for arbitrary temperature. In addition to static spin, charge, and bond density waves, we predict intermediate phases that lack inversion symmetry, and phase transitions that {ital reduce} {ital symmetry} {ital on} {ital increasing} {ital temperature}. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286659
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 5 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ADIABATIC APPROXIMATION
CHARGE DENSITY
CHARGE DENSITY WAVES
HARTREE-FOCK METHOD
HUBBARD MODEL
PHASE TRANSFORMATIONS
PHONONS
SPIN WAVES
TEMPERATURE DEPENDENCE