√3 × 2 and √3 × √7 Charge Density Wave Driven by Lattice Distortion in Monolayer VSe2

2020 ◽  
Vol 76 (5) ◽  
pp. 412-415 ◽  
Author(s):  
Trinh Thi Ly ◽  
Ganbat Duvjir ◽  
Nguyen Huu Lam ◽  
Jungdae Kim ◽  
Byoung Ki Choi ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Density Wave

scholarly journals Photoinduced Dynamics of Commensurate Charge Density Wave in 1T-TaS2 Based on Three-Orbital Hubbard Model

2018 ◽  
Vol 9 (1) ◽  
pp. 70 ◽  
Author(s):  
Tatsuhiko Ikeda ◽  
Hirokazu Tsunetsugu ◽  
Kenji Yonemitsu
Keyword(s):  
Laser Pulse ◽  
Charge Density ◽  
Laser Irradiation ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Ultrashort Laser Pulse ◽  
Density Wave ◽  
Layered Compound ◽  
Coupled Equations ◽  
Ultrashort Laser

We study the coupled charge-lattice dynamics in the commensurate charge density wave (CDW) phase of the layered compound 1T-TaS 2 driven by an ultrashort laser pulse. For describing its electronic structure, we employ a tight-binding model of previous studies including the effects of lattice distortion associated with the CDW order. We further add on-site Coulomb interactions and reproduce an energy gap at the Fermi level within a mean-field analysis. On the basis of coupled equations of motion for electrons and the lattice distortion, we numerically study their dynamics driven by an ultrashort laser pulse. We find that the CDW order decreases and even disappears during the laser irradiation while the lattice distortion is almost frozen. We also find that the lattice motion sets in on a longer time scale and causes a further decrease in the CDW order even after the laser irradiation.

P4W20O68: A complex charge-density-wave modulated structure with an antiferroelectric-like lattice distortion

2000 ◽  
Vol 62 (1) ◽  
pp. 176-188 ◽  
Author(s):  
P. Roussel ◽  
Ph. Labbé ◽  
H. Leligny ◽  
D. Groult ◽  
P. Foury-Leylekian ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Density Wave ◽  
Modulated Structure

scholarly journals Microscopic evidence for strong periodic lattice distortion in two-dimensional charge-density wave systems

2014 ◽  
Vol 89 (16) ◽  
Author(s):  
Jixia Dai ◽  
Eduardo Calleja ◽  
Jacob Alldredge ◽  
Xiangde Zhu ◽  
Lijun Li ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Density Wave ◽  
Periodic Lattice ◽  
Two Dimensional ◽  
Microscopic Evidence

Periodic lattice distortion accompanying the charge-density-wave transition for Sn/Ge(111)

1999 ◽  
Vol 60 (4) ◽  
pp. 2860-2863 ◽  
Author(s):  
Jiandi Zhang ◽  
Ismail ◽  
P. J. Rous ◽  
A. P. Baddorf ◽  
E. W. Plummer
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Density Wave ◽  
Periodic Lattice

Periodic lattice distortion accompanying the(3×3)charge-density-wave phase of Sn/Ge(111)

1998 ◽  
Vol 57 (8) ◽  
pp. 4579-4583 ◽  
Author(s):  
A. P. Baddorf ◽  
V. Jahns ◽  
Jiandi Zhang ◽  
J. M. Carpinelli ◽  
E. W. Plummer
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Lattice Distortion ◽  
Density Wave ◽  
Periodic Lattice ◽  
Wave Phase ◽  
Charge Density Wave Phase

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.

Wave Analysis of the Charge Density Wave Dynamics in the Molecular Conductor (Perylene)2Pt(mnt)2 (mnt=maleonitriledithiolate)

1995 ◽  
Vol 5 (5) ◽  
pp. 539-545 ◽  
Author(s):  
J. Dumas ◽  
N. Thirion ◽  
M. Almeida ◽  
E. B. Lopes ◽  
M. J. Matos ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave Analysis ◽  
Wave Dynamics ◽  
Molecular Conductor
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