Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers

Bravo, Alvaro Rojo1; Yi, Tianyou2; Kirova, Natasha3,4; Brazovskii, Serguei1,4

2015-03

10.1016/j.physb.2014.11.031

PHYSICA B-CONDENSED MATTER   影响因子和分区

0921-4526

1873-2135

We derive and study equations for dissipative transient processes in a constraint incommensurate charge density wave (CDW) with remnant pockets or a thermal population of normal can The attention was paid to give the correct conservation of condensed and normal electrons, which was problematic at presence of moving dislocation cores if working within an intuitive Ginzburg-Landau like model. We performed a numeric modeling for stationary and transient states in a rectangular geometry when the voltage V or the normal current are applied across the conducting chains. We observe creation of an array of electronic vortices, the dislocations, at or close to the junction surface; their number increases step-wise with increasing V. The dislocation core strongly concentrates the normal carriers but the CDW phase distortions almost neutralize the total charge. At other regimes, the lines of the zero CDW amplitude flash across the sample working as phase slips. The studies were inspired by, and can be applied to experiments on mesa-junctions in NbSe3 and TaS3. (C) 2014 Elsevier B.V. All rights reserved.

CDW Vortex Dislocation Junction PDE Comsol

SCI ; CPCI-S ; EI

英语

其他

Physics

Physics, Condensed Matter

WOS:000350808300005

ELSEVIER SCIENCE BV

20151000600150

Charge density ; Dislocations (crystals) ; Niobium compounds ; Selenium compounds ; Sulfur compounds ; Tantalum compounds ; Vortex flow

Fluid Flow, General:631.1 ; Electricity: Basic Concepts and Phenomena:701.1

PHYSICS

Web of Science

1.Univ Paris 11, CNRS, LPTMS, UNIR 8502, F-91405 Orsay, France
2.South Univ Sci & Technol China, Shenzhen 518055, Guangdong, Peoples R China
3.Univ Paris 11, CNRS, LPS, UNIR 8502, F-91405 Orsay, France
4.Int Inst Phys, BR-59078400 Natal, RN, Brazil

Bravo, Alvaro Rojo,Yi, Tianyou,Kirova, Natasha,et al. Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers[J]. PHYSICA B-CONDENSED MATTER,2015,460:16-20.

Bravo, Alvaro Rojo,Yi, Tianyou,Kirova, Natasha,&Brazovskii, Serguei.(2015).Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers.PHYSICA B-CONDENSED MATTER,460,16-20.

Bravo, Alvaro Rojo,et al."Modeling of dislocations in a CDW junction: Interference of the CDW and normal carriers".PHYSICA B-CONDENSED MATTER 460(2015):16-20.