scholarly journals Fluctuating charge-density waves in the Hubbard model

2008 ◽  
Vol 77 (15) ◽  
Author(s):  
Alexei Sherman ◽  
Michael Schreiber
Keyword(s):  
Hubbard Model ◽  
Charge Density ◽  
Charge Density Waves ◽  
Density Waves

scholarly journals Расширенная модель Холстейна-Хаббарда для эпитаксиального графена на металле

2018 ◽  
Vol 52 (2) ◽  
pp. 238
Author(s):  
С.Ю. Давыдов
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Charge Density ◽  
Coulomb Repulsion ◽  
Charge Density Waves ◽  
Extended Hubbard Model ◽  
Density Waves ◽  
Holstein Model ◽  
Uniform State ◽  
Numerical Estimations

AbstractA model that combines the extended Hubbard model involving intra-atomic and interatomic Coulomb repulsion and the Holstein model describing the interaction of a band electron with an Einstein phonon is proposed. Three regions of the phase diagram are considered. The regions correspond to the states of spin- and charge-density waves and the state uniform in spin and charge. Numerical estimations for the Rh, Ir, and Pt substrates show that Coulomb interaction plays a leading part, making possible transitions from the uniform state to the states of spin- and charge-density waves.

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.

Macroscopic quantum tunneling of charge density waves

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-161-Pr10-163
Author(s):  
H. Matsukawa ◽  
H. Miyake ◽  
M. Yumoto ◽  
H. Fukuyama
Keyword(s):  
Charge Density ◽  
Quantum Tunneling ◽  
Charge Density Waves ◽  
Density Waves ◽  
Macroscopic Quantum ◽  
Macroscopic Quantum Tunneling

Phase slip scaling relationship for the 59 K and 143 K charge-density-waves in NbSe3

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-129-Pr10-132 ◽  
Author(s):  
J. P. McCarten ◽  
T. C. Jones ◽  
X. Wu ◽  
J. H. Miller ◽  
I. Pirtle ◽  
...  
Keyword(s):  
Charge Density ◽  
Charge Density Waves ◽  
Phase Slip ◽  
Density Waves ◽  
Scaling Relationship
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