scholarly journals Three-dimensional Fermi surface of 2H−NbSe2 : Implications for the mechanism of charge density waves

2018 ◽  
Vol 97 (23) ◽  
Author(s):  
F. Weber ◽  
R. Hott ◽  
R. Heid ◽  
L. L. Lev ◽  
M. Caputo ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Charge Density ◽  
Three Dimensional ◽  
Charge Density Waves ◽  
Density Waves

scholarly journals Monolayer VTe2 : Incommensurate Fermi surface nesting and suppression of charge density waves

2019 ◽  
Vol 99 (24) ◽  
Author(s):  
Katsuaki Sugawara ◽  
Yuki Nakata ◽  
Kazuki Fujii ◽  
Kosuke Nakayama ◽  
Seigo Souma ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Charge Density ◽  
Charge Density Waves ◽  
Density Waves ◽  
Fermi Surface Nesting

Charge-density waves in two- and three-dimensional jellium

1980 ◽  
Vol 21 (7) ◽  
pp. 2739-2744 ◽  
Author(s):  
L. M. Sander ◽  
J. H. Rose ◽  
H. B. Shore
Keyword(s):  
Charge Density ◽  
Three Dimensional ◽  
Charge Density Waves ◽  
Density Waves

NONSTATIONARY JOSEPHSON EFFECT AND QUASIPARTICLE TUNNELING BETWEEN PARTIALLY-DIELECTRIZED SUPERCONDUCTORS WITH CHARGE-DENSITY WAVES

1993 ◽  
Vol 07 (22) ◽  
pp. 3927-3935 ◽  
Author(s):  
A.M. GABOVICH
Keyword(s):  
Experimental Data ◽  
Fermi Surface ◽  
Charge Density ◽  
Excitation Spectrum ◽  
Josephson Effect ◽  
Tunnel Junctions ◽  
Charge Density Waves ◽  
Density Waves ◽  
Quasiparticle Tunneling ◽  
Current Voltage

The tunnel junctions between superconductors where the Fermi surface (FS) is partially dielectrized are considered. The dielectrization due to Coulomb- and (or) electron-phonon interactions leads to the emergence of the dielectric gap Σ on nested FS sections and the existence of the charge-density waves below temperature T=T d . When T<T c <T d the partially-dielectrized metals become superconductors with a corresponding gap ∆. The voltage dependences of the nonstationary Josephson current and quasiparticle current are calculated for such junctions. The current-voltage (I–V) characteristics involve several Riedel-type singularities and jumps for voltages equal to definite combinations of gaps ∆ and Σ in the fermion excitation spectrum. So, I–V curves are much more complex than the ones for usual BCS-type superconductors. The results for quasiparticle tunneling agree with the experimental data available for oxides.

scholarly journals Three-Dimensional Electron Realm inVSe2by Soft-X-Ray Photoelectron Spectroscopy: Origin of Charge-Density Waves

2012 ◽  
Vol 109 (8) ◽  
Author(s):  
Vladimir N. Strocov ◽  
Ming Shi ◽  
Masaki Kobayashi ◽  
Claude Monney ◽  
Xiaoqiang Wang ◽  
...  
Keyword(s):  
Charge Density ◽  
Photoelectron Spectroscopy ◽  
Three Dimensional ◽  
Charge Density Waves ◽  
Dimensional Electron ◽  
Density Waves ◽  
X Ray

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.

Effects of band structure and electron–phonon coupling on charge density waves

2013 ◽  
Vol 91 (6) ◽  
pp. 487-489 ◽  
Author(s):  
Jason W. Sadowski ◽  
K. Tanaka ◽  
Yuki Nagai
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Hubbard Model ◽  
Charge Density ◽  
Charge Density Waves ◽  
Phonon Coupling ◽  
Density Waves ◽  
Electron Phonon Coupling ◽  
Half Filling ◽  
Attractive Hubbard Model

We examine the effects of band structure and electron–phonon interactions on charge density waves (CDW) in terms of the extended attractive Hubbard model at half filling. It is shown that van Hove singularities well below the Fermi surface can lead to a substantial energy gain by electron–phonon coupling and result in the formation of CDW.

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