scholarly journals Coherent Modulation of Quasiparticle Scattering Rates in a Photoexcited Charge-Density-Wave System

2022 ◽  
Vol 128 (2) ◽  
Author(s):  
J. Maklar ◽  
M. Schüler ◽  
Y. W. Windsor ◽  
C. W. Nicholson ◽  
M. Puppin ◽  
...  
Author(s):  
S. Ritchie ◽  
J. C. Bennett ◽  
A. Prodan ◽  
F.W. Boswell ◽  
J.M. Corbett

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.


1992 ◽  
Vol 46 (12) ◽  
pp. 7407-7412 ◽  
Author(s):  
B. Dardel ◽  
M. Grioni ◽  
D. Malterre ◽  
P. Weibel ◽  
Y. Baer ◽  
...  

2005 ◽  
Vol 131 ◽  
pp. 183-184
Author(s):  
D. Dominko ◽  
D. Starešinić ◽  
K. Biljaković ◽  
P. Lunkenheimer ◽  
A. Loidl

2018 ◽  
Vol 97 (11) ◽  
Author(s):  
Y. W. Li ◽  
J. Jiang ◽  
H. F. Yang ◽  
D. Prabhakaran ◽  
Z. K. Liu ◽  
...  

2005 ◽  
Vol 131 ◽  
pp. 191-192 ◽  
Author(s):  
D. Starešinić ◽  
K. Biljaković ◽  
P. Lunkenheimer ◽  
A. Loidl ◽  
J. C. Lasjaunias

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