X-ray diffuse scattering as precursor of incommensurate Peierls transitions in one-dimensional organic charge transfer conductors

2004 ◽  
Vol 219 (11) ◽  
Author(s):  
Jean-Paul Pouget
Keyword(s):  
Charge Transfer ◽  
Charge Density Wave ◽  
Diffuse Scattering ◽  
Lattice Distortion ◽  
Density Wave ◽  
Periodic Lattice ◽  
One Dimensional ◽  
X Ray ◽  
Charge Transfer Salts ◽  
A Charge

AbstractQuasi-one dimensional (1D) conductors of the TTF-TCNQ family of charge transfer salts exhibit a Peierls transition which stabilizes a periodic lattice distortion (PLD), accompanied by a charge density wave (CDW) modulation, with an incommensurate 2

Peculiarities of carrier scattering at the boundary of a normal metal and a quasi-one-dimensional conductor with a charge-density wave

JETP Letters ◽  
1996 ◽  
Vol 64 (4) ◽  
pp. 285-291 ◽  
Author(s):  
A. A. Sinchenko ◽  
Yu. I. Latyshev ◽  
S. G. Zybtsev ◽  
I. G. Gorlova ◽  
P. Monceau
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Normal Metal ◽  
One Dimensional ◽  
Carrier Scattering ◽  
A Charge

Friedel oscillations and charge density wave pinning in quasi-one dimensional conductors: Thermal effects

2002 ◽  
Vol 12 (9) ◽  
pp. 9-14
Author(s):  
J.-P. Pouget ◽  
S. Ravy ◽  
S. Rouziere ◽  
S. Brazovskii
Keyword(s):  
Charge Density ◽  
Interference Effect ◽  
Charge Density Wave ◽  
Density Wave ◽  
Thermal Dependence ◽  
One Dimensional ◽  
X Ray ◽  
Friedel Oscillations ◽  
X Ray Scattering ◽  
Ray Scattering

An original interference effect observed in one-dimensional (1D) disordered conductors between X-ray scattering due to the disorder and the charge density wave (CDW)- periodic lattice modulation (PLD) allows to study the pinning of the modulation at local scale. We apply this effect to determine the phase of the CDW at the pinning centres and to show that the response of the CDW to the impurity potential leads to the formation of Friedel oscillations (FO). We report experimental determination and quantitative interpretation of the thermal evolution of both features. The thermal dependence of the interference effect allows one to determine the pinning energy of the 2kF-CDW in the V-and W-doped blue bronzes. We show in particular that in these compounds the regular CDW is pinned to the dopant dressed by its FO. In the organic charge transfer salts irradiation leads to an enhancement of the 2kF and 4kF X-ray scattering that we show, by its thermal dependence, to be due to the formation of FO.

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