Impact of the modulation doping layer on the ν=5/2 anisotropy

Abstract

We have carried out a systematic study of the tilted magnetic field induced anisotropy at the Landau level filling factor ν=5/2 in a series of high quality GaAs quantum wells, where the setback distance (d) between the modulation doping layer and the GaAs quantum well is varied from 33 to 164 nm. We have observed that in the sample of the smallest d electronic transport is anisotropic when the in-plane magnetic field (B_{ip}) is parallel to the [1-10] crystallographic direction, but remains more or less isotropic when B_{ip} // [110]. In contrast, in the sample of largest d, electronic transport is anisotropic in both crystallographic directions. Our results clearly show that the modulation doping layer plays an important role in the tilted field induced ν=5/2 anisotropy.

arXiv commentPhys. Rev. B 91, 125308 (2015)

References in corpus (30)

• Non-Abelian Anyons and Topological Quantum Computation
• Evidence for an Anisotropic State of Two-Dimensional Electrons in High Landau Levels
• Strongly Anisotropic Transport in Higher Two-Dimensional Landau Levels
• Incompressible paired Hall state, stripe order and the composite fermion liquid phase in half-filled Landau levels
• Liquid Crystal Phases of Quantum Hall Systems
• The Ground State of a Two-Dimensional Electron Liquid in a Weak Magnetic Field
• Exact results for interacting electrons in high Landau levels
• Exact Quantization of Even-Denominator Fractional Quantum Hall State at $\nu$=5/2 Landau Level Filling Factor
• Anisotropic States of Two-Dimensional Electron Systems in High Landau Levels: Effect of an In-Plane Magnetic Field
• Strongly Anisotropic Electronic Transport at Landau Level Filling Factor $\nu =9/2$ and $\nu =5/2$ Under Tilted Magnetic Field
• Quantum Theory of Quantum-Hall Smectics
• Intrinsic Gap of the nu=5/2 Fractional Quantum Hall State
• Field-tilt Anisotropy Energy in Quantum Hall Stripe States
• Tilt-Induced Anisotropic to Isotropic Phase Transition at $\nu =5/2$
• Finite Temperature Density Instability at High Landau Level Occupancy
• Unlocking Transition for Modulated Surfaces and Quantum Hall Stripes
• Impact of disorder on the 5/2 fractional quantum Hall state
• Effect of strain on stripe phases in the Quantum Hall regime
• An Investigation of Orientational Symmetry-Breaking Mechanisms in High Landau Levels
• $nu=5/2$ Fractional Quantum Hall State in Low-Mobility Electron Systems: Different Roles of Disorder
• Density Induced Interchange of Anisotropy Axes at Half-Filled High Landau Levels
• Anisotropic Disorder in High Mobility 2D Heterostructures and its Correlation to Electron Transport
• Reorientation of Anisotropy in a Square Well Quantum Hall Sample
• Pinning mode resonances of 2D electron stripe phases: Effect of in-plane magnetic field
• Enhancement of the $\nu =5/2$ Fractional Quantum Hall State in a Small In-Plane Magnetic Field
• Anisotropic transport in unidirectional lateral superlattice around half-filling of the second Landau level
• Orientation of the Stripe Formed by the Two-Dimensional Electrons in Higher Landau Levels
• Chern-Simons Theory for Quantum Hall Stripes
• Direct observation of micron-scale ordered structure in a two-dimensional electron system
• On the magnetoresistance anisotropy of a 2-dimensional electron gas with large half-integer filling factors

Cited by in corpus (9)

• Observation of a transition from a topologically ordered to a spontaneously broken symmetry phase
• Exact results for model wave functions of anisotropic composite fermions in the fractional quantum Hall effect
• Pomeranchuk Instability of Composite Fermi Liquids
• Observation of an anomalous density-dependent energy gap of the $\nu =5/2$ fractional quantum Hall state in the low density regime
• Onset of Quantum Criticality in the Topological-to-Nematic Transition in a Two-dimensional Electron Gas at Filling Factor $\nu =5/2$
• Pair-Density-Wave Order and Paired Fractional Quantum Hall Fluids
• Reorientation of the stripe Phase of 2D Electrons by a Minute Density Modulation
• Competition of Pairing and Nematicity in the Two-Dimensional Electron Gas
• Highly-Anisotropic Even-Denominator Fractional Quantum Hall State in an Orbitally-Coupled Half-Filled Landau Level