.png){kind=icon}
.png){kind=icon}
Return
Anti-levitation in integer quantum Hall systems
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevB.89.045314.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The evolution of extended states of two-dimensional electron gas with white-noise randomness and field is numerically investigated by using the Anderson model on square lattices. Focusing on the lowest Landau band we establish an anti-levitation scenario of the extended states: As either the disorder strength W increases or the magnetic field strength B decreases, the energies of the extended states move below the Landau energies pertaining to a clean system. Moreover, for strong enough disorder, there is a disorder-dependent critical magnetic field B-c(W) below which there are no extended states at all. A general phase diagram in the W-1/B plane is suggested with a line separating domains of localized and delocalized states.
Keywords:
METAL-INSULATOR-TRANSITION
GLOBAL PHASE-DIAGRAM
SCALING THEORY
DELOCALIZED STATES
CRITICAL-BEHAVIOR
EXTENDED STATES
WEAK LEVITATION
LOCALIZATION
CONDUCTIVITY
DIFFUSION
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
3.7
Papers:
15.4W
Citations:
41.0W
Organization
No organization information available