Fluctuation effects on the Raman scattering from the charge-density-wave system TTF-TCNQ

1998 ◽  
Vol 58 (7) ◽  
pp. 3477-3481 ◽  
Author(s):  
Y. Lin ◽  
J. E. Eldridge
Keyword(s):  
Raman Scattering ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave System ◽  
Fluctuation Effects

Resonant Raman scattering from a charge-density-wave system (TTF-TCNQ)

1998 ◽  
Vol 105 (7) ◽  
pp. 427-431 ◽  
Author(s):  
J.E. Eldridge ◽  
Y. Lin ◽  
T.C. Mayadunne ◽  
L.K. Montgomery ◽  
S. Kaganov ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave System ◽  
Resonant Raman ◽  
Resonant Raman Scattering ◽  
A Charge

Incommensurate modulated phases of the NbxTa1-xTe4 charge density wave system

1992 ◽  
Vol 50 (1) ◽  
pp. 58-59
Author(s):  
S. Ritchie ◽  
J. C. Bennett ◽  
A. Prodan ◽  
F.W. Boswell ◽  
J.M. Corbett
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Direct Evidence ◽  
Density Wave ◽  
Wave System ◽  
Modulated Phases ◽  
Metal Atoms ◽  
Incommensurate Modulation ◽  
End Members ◽  
Modulation Wave Vector

A continuous sequence of compounds having composition NbxTa1-xTe4; 0 ≤ x ≤ 1 have been studied by electron diffraction and microscopy. Previous studies have shown that the end members of the series, TaTε4 and NbTε4 possess a quasi-one-dimensional character and exhibit charge density wave (CDW) distortions. In these compounds, the subcell structure is tetragonal with axes (a × a × c) and consists of the metal atoms (Nb or Ta) centered within an extended antiprismatic cage of Te atoms. At room temperature, TaTε4 has a commensurate modulation structure with a 2a × 2a × 3c unit cell. In NbTε4, an incommensurate modulation with × ∼ 16c axes is observed. Preliminary studies of the mixed compounds NbxTα1-xTε4 showed a discontinuous jump of the modulation wave vector commensurate to incommensurate when the Nb dopant concentration x, exceeded x ≃ 0.3, In this paper, the nature of the compositional dependence of is studied in greater detail and evidence is presented for a stepwise variation of . This constitutes the first direct evidence for a Devil's staircase in CDW materials.

Spectroscopic signatures of phase transitions in a charge-density-wave system: 1T-TaS2

1992 ◽  
Vol 46 (12) ◽  
pp. 7407-7412 ◽  
Author(s):  
B. Dardel ◽  
M. Grioni ◽  
D. Malterre ◽  
P. Weibel ◽  
Y. Baer ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave System ◽  
A Charge ◽  
Spectroscopic Signatures

scholarly journals Raman scattering evidence for a cascade evolution of the charge-density-wave collective amplitude mode

2010 ◽  
Vol 81 (8) ◽  
Author(s):  
M. Lavagnini ◽  
H.-M. Eiter ◽  
L. Tassini ◽  
B. Muschler ◽  
R. Hackl ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Amplitude Mode

Temperature hysteresis in dielectric and transport properties of charge density wave system o-TaS3

2005 ◽  
Vol 131 ◽  
pp. 183-184
Author(s):  
D. Dominko ◽  
D. Starešinić ◽  
K. Biljaković ◽  
P. Lunkenheimer ◽  
A. Loidl
Keyword(s):  
Charge Density ◽  
Transport Properties ◽  
Charge Density Wave ◽  
Density Wave ◽  
Temperature Hysteresis ◽  
Wave System
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