Quantum charge density fluctuations and the phase transition in Ce

1999 ◽  
Vol 9 (4) ◽  
pp. 619-634 ◽  
Author(s):  
A.V. Nikolaev ◽  
K.H. Michel
Keyword(s):  
Phase Transition ◽  
Charge Density ◽  
Density Fluctuations ◽  
Quantum Charge

scholarly journals Ultrafast spot-profile LEED of a charge-density wave phase transition

2021 ◽  
Vol 118 (22) ◽  
pp. 221603
Author(s):  
G. Storeck ◽  
K. Rossnagel ◽  
C. Ropers
Keyword(s):  
Phase Transition ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave Phase ◽  
Charge Density Wave Phase ◽  
A Charge

Layer Number Dependence of Charge Density Wave Phase Transition Between Nearly-Commensurate and Incommensurate Phases in 1T-TaS2

2020 ◽  
Vol 124 (49) ◽  
pp. 27176-27184
Author(s):  
Yasushi Ishiguro ◽  
Kirill Bogdanov ◽  
Naoko Kodama ◽  
Mizuki Ogiba ◽  
Tatsuya Ohno ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Layer Number ◽  
Wave Phase ◽  
Charge Density Wave Phase ◽  
Incommensurate Phases

Charge-density fluctuations probed by vibronic modes of K0.3MoO3

2012 ◽  
Vol 407 (11) ◽  
pp. 1823-1826 ◽  
Author(s):  
Rebecca Beyer ◽  
Neven Barišić ◽  
Martin Dressel
Keyword(s):  
Charge Density ◽  
Density Fluctuations

First-principles study on the heterostructure of twisted graphene/hexagonal boron nitride/graphene sandwich structure

2021 ◽  
Author(s):  
Yiheng Chen ◽  
Wen-Ti Guo ◽  
Zi-si Chen ◽  
Suyun Wang ◽  
Jian-Min Zhang
Keyword(s):  
Phase Transition ◽  
Boron Nitride ◽  
Charge Density ◽  
First Principles ◽  
Sandwich Structure ◽  
Hexagonal Boron Nitride ◽  
Mulliken Population ◽  
Metal Insulator ◽  
Insulator Phase Transition ◽  
Twisted Graphene

Abstract In recent years, the discovery of "magic angle" graphene has given new inspiration to the formation of heterojunctions. Similarly, the use of hexagonal boron nitride, known as white graphene, as a substrate for graphene devices has more aroused great interest in the graphene/hexagonal boron nitride (G/hBN) heterostructure system. Based on the first principles method of density functional theory, the band structure, density of states, Mulliken population, and differential charge density of a tightly packed model of twisted graphene/hexagonal boron nitride/graphene (G/hBN/G) sandwich structure have been studied. Through the establishment of heterostructure models TBG inserting hBN with different twisted angles, it was found that the band gap, Mulliken population, and charge density, exhibited specific evolution regulars with the rotation angle of the upper graphene, showing novel electronic properties and realizing metal-insulator phase transition. We find that the particular value of the twist angle at which the metal-insulator phase transition occurs and propose a rotational regulation mechanism with angular periodicity. Our results have guiding significance for the practical application of heterojunction electronic devices.

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