Vertical Confinement and Evolution of Reentrant Insulating Transition in the Fractional Quantum Hall Regime

Abstract

We have observed an anomalous shift of the high field reentrant insulating phases in a two-dimensional electron system (2DES) tightly confined within a narrow GaAs/AlGaAs quantum well. Instead of the well-known transitions into the high field insulating states centered around $\nu =1/5$, the 2DES confined within an 80Å-wide quantum well exhibits the transition at $\nu =1/3$. Comparably large quantum lifetime of the 2DES in narrow well discounts the effect of disorder and points to confinement as the primary driving force behind the evolution of the reentrant transition.

arXiv comment5 pages, 4 figures

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Cited by in corpus (6)

• Connecting the Reentrant Insulating Phase and the Zero Field Metal-Insulator Transition in a 2D Hole System
• $\nu =1/2$ Fractional Quantum Hall Effect in Tilted Magnetic Fields
• Possible observation of phase coexistence of the $\nu =1/3$ fractional quantum Hall liquid and a solid
• Particle-Hole Symmetry and the Reentrant Integer Quantum Hall Wigner Solid
• Pinning modes of high magnetic field Wigner solids with controlled alloy disorder
• AC Magnetotransport in Reentrant Insulating Phases of Two-dimensional Electrons near 1/5 and 1/3 Landau fillings