A model for charge-density waves in TaTe4 and related materials

1985 ◽  
Vol 63 (1) ◽  
pp. 46-49 ◽  
Author(s):  
M. B. Walker
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Three Dimensional ◽  
Charge Density Waves ◽  
Density Waves ◽  
One Dimensional ◽  
Weakly Interacting ◽  
Proposed Model

The proposed model assumes that charge-density waves are formed on equivalent, weakly interacting, one-dimensional columns. Various three-dimensional structures differing in the relative phasing of the charge-density waves on different columns are found, and the charge-density wave structures of TaTe4 and NbTe4 are interpreted in terms of these results.

Epitaxial Growth and Charge Density Wave of TaSe2

1991 ◽  
Vol 230 ◽  
Author(s):  
Toshihiro Shimada ◽  
Fumio S. Ohuchi ◽  
Bruce A. Parkinson
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Epitaxial Growth ◽  
Ultrathin Films ◽  
Charge Density Wave ◽  
Density Wave ◽  
Transition Metal Dichalcogenides ◽  
Charge Density Waves ◽  
Density Waves ◽  
Metal Dichalcogenides

AbstractWe report an epitaxial growth of TaSe2, a family of transition metal dichalcogenides that exhibit Charge Density Waves (CDW). The films that have been characterized with RHEED, LEED, XPS and STM showed two different phases. Occurrence of CDW in the ultrathin films has been detected by XPS and LEED.

STRUCTURAL AND ELECTRONIC ORIGIN OF THE HIDDEN NESTING AND CHARGE DENSITY WAVES IN TRANSITION METAL OXIDES AND BRONZES

1993 ◽  
Vol 07 (23n24) ◽  
pp. 4005-4043 ◽  
Author(s):  
ENRIC CANADELL ◽  
MYUNG-HWAN WHANGBO
Keyword(s):  
Metal Oxides ◽  
Charge Density ◽  
Transition Metal Oxides ◽  
Charge Density Wave ◽  
Density Wave ◽  
Charge Density Waves ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
One Dimensional ◽  
Magnéli Phases

By employing the concept of hidden nesting, we examined why charge density wave (CDW) instabilities occur in the two-dimensional (2D) metals, purple bronzes AMo 6 O 17 (A=K, Na, Tl), Magnéli phases Mo 4 O 11 and monophosphate tungsten bronzes (MPTB’s). These oxide metals consist of metal-oxygen (M-O) layers made up of MO 6 (M=Mo, W) octahedra, and the t 2g-block bands of these M-O layers are partially filled. The M-O layers are divided into three sets of parallel chains containing t 2g-orbitals, and the t 2g-orbitals of each MO 6 octahedron act as δ-orbitals toward the M-O axes perpendicular to the chains. Consequently, the t 2g-block bands of AMo 6 O 17, Mo 4 O 11 and MPTB’s can be described in terms of three hidden one-dimensional (1D) bands, which explains why these 2D metals possess three hidden 1D Fermi surfaces and give rise to the associated CDW instabilities. The hidden nesting concept is applicable to the diphosphate tungsten bronzes, which are apparently 2D metallic because their W-O layers have 1D bands dispersive in two orthogonal directions. In general, the electronic instabilities of any systems with several partially filled bands are expected to arise from hidden nesting.

High-frequency, "quantum" and electromechanical effects in quasi-one-dimensional charge density wave conductors

2013 ◽  
Vol 183 (1) ◽  
pp. 33-54 ◽  
Author(s):  
Vadim Ya. Pokrovskii ◽  
Sergey G. Zybtsev ◽  
Maksim V. Nikitin ◽  
Irina G. Gorlova ◽  
Venera F. Nasretdinova ◽  
...  
Keyword(s):  
Charge Density ◽  
High Frequency ◽  
Charge Density Wave ◽  
Density Wave ◽  
One Dimensional ◽  
Electromechanical Effects

scholarly journals Phase slip process and charge density wave dynamics in a one dimensional conductor

2017 ◽  
Vol 7 ◽  
pp. 3277-3280 ◽  
Author(s):  
N. Habiballah ◽  
M. Zouadi ◽  
A. Arbaoui ◽  
M. Qjani ◽  
J. Dumas
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Phase Slip ◽  
One Dimensional ◽  
Wave Dynamics
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