Dynamic Response of Wigner Crystals

Abstract

The Wigner crystal, an ordered array of electrons, is one of the very first proposed many-body phases stabilized by the electron-electron interaction. This electron solid phase has been reported in ultra-clean two-dimensional electron systems at extremely low temperatures, where the Coulomb interaction dominants over the kinetic energy, disorder potential and thermal fluctuation. We closely examine this quantum phase with capacitance measurements where the device length-scale is comparable with the crystal's correlation length. The extraordinarily high performance of our technique makes it possible to quantitatively study the dynamic response of the Wigner crystal within the single crystal regime. Our result will greatly boost the study of this inscrutable electron solid.

References in corpus (12)

• Signatures of bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
• Observation of Wigner crystal of electrons in a monolayer semiconductor
• Melting of a 2D Quantum Electron Solid in High Magnetic Field
• NMR profiling of quantum electron solids in high magnetic fields
• Observation of Spontaneous Ferromagnetism in a Two-Dimensional Electron System
• Evidence for Two Different Solid Phases of Two Dimensional Electrons in High Magnetic Fields
• Probing the Melting of a Two-dimensional Quantum Wigner Crystal via its Screening Efficiency
• Correlated states of 2D electrons near the Landau level filling $\nu =1/7$
• Melting of Wigner crystal in high-mobility $n$-GaAs/AlGaAs heterostructures at filling factors $0.18>\nu >0.125$: Acoustic studies
• Determination of $g$-factor in InAs two-dimensional electron system by capacitance spectroscopy
• Capacitive Response of Wigner Crystals at the Quantum Hall Plateau
• High Precision, Low Excitation Capactiance Measurement Methods from 10 mK- to Room-Temperature

Cited by in corpus (4)

• Moving crystal phases of a quantum Wigner solid in an ultra-high-quality 2D electron system
• Signatures of correlated defects in an ultra-clean Wigner crystal in the extreme quantum limit
• Evidence for Topological Protection Derived from Six-Flux Composite Fermions
• Electronic phonon-induced magnetism in moiré Mott-Wigner crystals