Collective Modes of Incommensurate Spin Density Wave in One-Dimensional Hubbard Model

2001 ◽  
Vol 70 (3) ◽  
pp. 818-828 ◽  
Author(s):  
Masanori Ichioka ◽  
Eiji Kaneshita ◽  
Kazushige Machida
Keyword(s):  
Hubbard Model ◽  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Collective Modes ◽  
One Dimensional

Tuning of Spin Density Wave Strengths in Quasi-One-Dimensional Halogen-Bridged NiIIIComplexes with Strong Electron Correlations, [NiIII(chxn)2X]Y2

1999 ◽  
Vol 38 (8) ◽  
pp. 1894-1899 ◽  
Author(s):  
Masahiro Yamashita ◽  
Toshio Manabe ◽  
Kazuo Inoue ◽  
Takuya Kawashima ◽  
Hiroshi Okamoto ◽  
...  
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Electron Correlations ◽  
Strong Electron ◽  
One Dimensional ◽  
Strong Electron Correlations

Spin density wave – metal (superconductor) competition: A phase segregation scenario

2002 ◽  
Vol 12 (9) ◽  
pp. 61-64
Author(s):  
C. Pasquier ◽  
M. Héritier ◽  
D. Jérome
Keyword(s):  
Free Energy ◽  
Dispersion Relation ◽  
Fermi Level ◽  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Phase Segregation ◽  
Organic Conductor ◽  
One Dimensional ◽  
Unique Parameter

We present a model comparing the free energy of a phase exhibiting a segregation between spin density wave (SDW) and metallic domains (eventually superconducting domains) and the free energy of homogeneous phases which explains the findings observed recently in (TMTSF)2PF6. The dispersion relation of this quasi-one-dimensional organic conductor is linearized around the Fermi level. Deviations from perfect nesting which stabilizes the SDW state are described by a unique parameter t$'_b$, this parameter can be the pressure as well.

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