Defect-concentration dependence of the spin-density-wave transport in the organic conductor (TMTSF)2PF6(TMTSF=tetra- methyltetraselenafulvalene)

1991 ◽  
Vol 43 (1) ◽  
pp. 1264-1267 ◽  
Author(s):  
W. Kang ◽  
S. Tomić ◽  
D. Jérome
Keyword(s):  
Spin Density ◽  
Concentration Dependence ◽  
Density Wave ◽  
Spin Density Wave ◽  
Defect Concentration ◽  
Organic Conductor ◽  
Wave Transport

High magnetic field NMR investigation of the spin density wave phase of TMTSF2PF6

2002 ◽  
Vol 12 (9) ◽  
pp. 389-389
Author(s):  
W. G. Clark ◽  
F. Zamborsky ◽  
B. Alavi ◽  
P. Vonlanthen ◽  
W. Moulton ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Proton Relaxation ◽  
High Magnetic Fields ◽  
Organic Conductor ◽  
First Order ◽  
The Magnetic Field ◽  
Very High

We report proton NMR measurements of the effect of very high magnetic fields up to 44.7 T (1.9 GHz) on the spin density wave (SDW) transition of the organic conductor TMTSF2PF6. Up to 1.8 GHz, no effect of critical slowing close to the transition is seen on the proton relaxation rate (1/T1), which is determined by the SDW fluctuations associated with the phase transition at the NMR frequency. Thus, the correlation time for such fluctuations is less than $1O^{-10}$s. A possible explanation for the absence of longer correlation times is that the transition is weakly first order, so that the full critical divergence is never achieved. The measurements also show a dependence of the transition temperature on the orientation of the magnetic field and a quadratic dependence on its magnitude that agrees with earlier transport measurements at lower fields. The UCLA part of this work was supported by NSF Grant DMR-0072524.

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.

Evidence of a spin-density-wave transition in the organic conductor (methylenedithiotetrathiafulvalene)2Au(CN)2[(MDT-TTF)2Au(CN)2]

1990 ◽  
Vol 42 (13) ◽  
pp. 8678-8681 ◽  
Author(s):  
Kazushi Kanoda ◽  
Yoshiaki Kobayashi ◽  
Toshihiro Takahashi ◽  
Tetsuya Inukai ◽  
Gunzi Saito
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Organic Conductor

Exploring the inside of the stable field-induced spin-density-wave phase of the organic conductor (TMTSF)2ClO4

2001 ◽  
Vol 120 (1-3) ◽  
pp. 1073-1074 ◽  
Author(s):  
W. Kang ◽  
Ok-Hee Chung ◽  
J. Moser ◽  
Haeyong Kang ◽  
D. Jérome ◽  
...  
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Organic Conductor ◽  
Wave Phase ◽  
Stable Field

Interplay of the spin-density-wave state and magnetic field in the organic conductor α-(BEDT-TTF)2KHg(SCN)4

1996 ◽  
Vol 54 (18) ◽  
pp. 12969-12978 ◽  
Author(s):  
Takahiko Sasaki ◽  
Andrei G. Lebed ◽  
Tetsuo Fukase ◽  
Naoki Toyota
Keyword(s):  
Magnetic Field ◽  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Organic Conductor ◽  
Wave State
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