scholarly journals Extended Hubbard model of superconductivity and charge-density-waves in the layered2Htransition metal dichalcogenides

2006 ◽  
Vol 74 (21) ◽  
Author(s):  
Zi-Jian Yao ◽  
Jian-Xin Li ◽  
Z. D. Wang
Keyword(s):  
Hubbard Model ◽  
Charge Density ◽  
Charge Density Waves ◽  
Extended Hubbard Model ◽  
Density Waves ◽  
Metal Dichalcogenides

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.

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.

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