scholarly journals Charge ordering in the one-dimensional extended Hubbard model: Implication to the TMTTF family of organic conductors

2001 ◽  
Vol 64 (23) ◽  
Author(s):  
Y. Shibata ◽  
S. Nishimoto ◽  
Y. Ohta
Keyword(s):  
Hubbard Model ◽  
Organic Conductors ◽  
Charge Ordering ◽  
Extended Hubbard Model ◽  
One Dimensional ◽  
The One

scholarly journals One-Dimensional Alternating Extended Hubbard Model at Quarter-Filling and Its Applications to Structural Instabilities of Organic Conductors

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 942
Author(s):  
M. Ménard ◽  
C. Bourbonnais
Keyword(s):  
Hubbard Model ◽  
Degrees Of Freedom ◽  
Organic Conductors ◽  
Group Method ◽  
Extended Hubbard Model ◽  
Bechgaard Salts ◽  
One Dimensional ◽  
Ordered Alloys ◽  
The One ◽  
Structural Instabilities

The one-dimensional extended Hubbard model with lattice dimerization and alternated site potentials is analyzed using the renormalization group method. The coupling of electrons to structural degrees of freedom such as the anion lattice and acoustic phonons is investigated to obtain the possible instabilities against the formation of lattice superstructures. Applications of the theory to anionic and spin-Peierls instabilities in the Fabre and Bechgaard salts series of organic conductors and ordered alloys are presented and discussed.

The Phase Diagram of the One-Dimensional Extended Hubbard Model

1995 ◽  
pp. 315-326 ◽  
Author(s):  
H. Q. Lin ◽  
E. R. Gagliano ◽  
D. K. Campbell ◽  
E. H. Fradkin ◽  
J. E. Gubernatis
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Extended Hubbard Model ◽  
One Dimensional ◽  
The One

Condensation transition in the one-dimensional extended Hubbard model

1986 ◽  
Vol 33 (12) ◽  
pp. 8155-8163 ◽  
Author(s):  
H. Q. Lin ◽  
J. E. Hirsch
Keyword(s):  
Hubbard Model ◽  
Extended Hubbard Model ◽  
One Dimensional ◽  
The One

scholarly journals Charge Ordering under a Magnetic Field in the Extended Hubbard Model

2003 ◽  
Vol 17 (20n21) ◽  
pp. 1103-1110
Author(s):  
Duc Anh Le ◽  
Anh Tuan Hoang ◽  
Toan Thang Nguyen
Keyword(s):  
Magnetic Field ◽  
Critical Temperature ◽  
Hubbard Model ◽  
Charge Ordering ◽  
Coherent Potential Approximation ◽  
Extended Hubbard Model ◽  
Potential Approximation ◽  
Relative Variation ◽  
Band Filling ◽  
The One

We study the charge ordering behavior under magnetic field H in the extended Hubbard model within the coherent potential approximation. At quarter filling, for small H we find that the relative variation of critical temperature is quadratic with the coefficient α smaller than the one for conventional spin-Peierls systems. For intermediate fields, a melting of the charge ordering on decreasing temperature under fixed H at various band filling is found.

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