Microwave resonance of the reentrant insulating quantum Hall phases in the 1st excited Landau Level

Abstract

We present measurements of the real diagonal microwave conductivity of the reentrant insulating quantum Hall phases in the first excited Landau level at temperatures below 50 mK. A resonance is detected around filling factor $\nu =2.58$ and weaker frequency dependence is seen at $\nu =2.42$ and 2.28. These measurements are consistent with the formation of a bubble phase crystal centered around these $\nu$ at very low temperatures.

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• Competing Fractional Quantum Hall and Electron Solid Phases in Graphene
• Contrasting Energy Scales of the Reentrant Integer Quantum Hall States
• Tilt Induced Localization and Delocalization in the Second Landau Level
• Local density of states of electron-crystal phases in graphene in the quantum Hall regime
• Nonequilibrium transport in density-modulated phases of the second Landau level
• Competition between fractional quantum Hall liquid and electron solid phases in the Landau levels of multilayer graphene
• Commensurability oscillations in the rf conductivity of unidirectional lateral superlattices: measurement of anisotropic conductivity by coplanar waveguide
• Hamiltonian theory for Quantum Hall systems in a tilted magnetic field: robustness of activation gaps
• Interaction between Surface Acoustic Wave and Quantum Hall Effects
• Stability of multielectron bubbles in high Landau levels
• Magnetospectroscopy of symmetric and anti-symmetric states in double quantum wells
• Charge density waves and their transitions in anisotropic quantum Hall systems
• Unbalanced Renormalization of Tunneling in MOSFET-type Structures in Strong High-Frequency Electric Fields
• Nuclear magnetic resonance line shapes of Wigner crystals in ${}^{13}$C-enriched graphene
• Exploring Quantum Hall Physics at Ultra-Low Temperatures and at High Pressures