De-Pinning Transition of Bubble Phases in a High Landau Level

Abstract

While in the lowest Landau level the electron-electron interaction leads to the formation of the Wigner crystal, in higher Landau levels a solid phase with multiple electrons in a lattice site of crystal was predicted, which was called the bubble phase. Reentrant integer quantum Hall states are believed to be the insulating bubble phase pinned by disorder. We carry out nonlinear transport measurements on the reentrant states and study the de-pinning of the bubble phase, which is complementary to previous microwave measurements and provides unique information. In this study, conductivity is directly measured with Corbino geometry. Based on the threshold electric field of de-pinning, a phase diagram of the reentrant state is mapped. We discuss an interaction-driven topological phase transition between the integer quantum Hall state and the reentrant integer quantum Hall state.

11 pages, 3 figures

References in corpus (4)

• Non-Abelian Anyons and Topological Quantum Computation
• Competition between quantum-liquid and electron-solid phases in intermediate Landau levels
• Recent Experimental Progress of Fractional Quantum Hall Effect: 5/2 Filling State and Graphene
• Microscopic Theory of the Reentrant IQHE in the First and Second Excited LLs

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• Electron Bubbles and the Structure of the Orbital Wavefunction
• Dynamic ordering transitions in charged solid
• Competition between fractional quantum Hall liquid and electron solid phases in the Landau levels of multilayer graphene
• Magnetotransport patterns of collective localization near $\nu =1$ in a high-mobility two-dimensional electron gas
• Interaction between Surface Acoustic Wave and Quantum Hall Effects
• Stability of multielectron bubbles in high Landau levels
• Nonlinear Transport of Graphene in the Quantum Hall Regime
• Nonlinear transport of Wigner solid phase surrounding the two-flux composite fermion liquid
• Melting phase diagram of bubble phases in high Landau levels
• Exploring Quantum Hall Physics at Ultra-Low Temperatures and at High Pressures