Wigner crystals—ordered arrays of electrons—have been recently found in various 2D
materials, but the first studies of these crystals in 2D electron systems (2DESs) date back …

Recent experiments have produced evidence for fractional quantum anomalous Hall
(FQAH) states at zero magnetic field in the semiconductor moiré superlattice system t MoTe …

Wigner predicted that when the Coulomb interactions between electrons become much
stronger than their kinetic energy, electrons crystallize into a closely packed lattice. A variety …

When the Coulomb repulsion between electrons dominates over their kinetic energy,
electrons in two-dimensional systems are predicted to spontaneously break continuous …

Two-dimensional electrons confined to GaAs quantum wells are hallmark platforms for
probing electron–electron interactions. Many key observations have been made in these …

Geometric fluctuations of the density mode in a fractional quantum Hall (FQH) state can give
rise to a nematic FQH phase, a topological state with a spontaneously broken rotational …

The quantum crystal of electrons, predicted more than 80 years ago by Eugene Wigner,
remains one of the most elusive states of matter. In this study, we observed the one …

The interplay between the Fermi sea anisotropy, electron-electron interaction, and
localization phenomena can give rise to exotic many-body phases. An exciting example is …

What are the ground states of an interacting, low-density electron system? In the absence of
disorder, it has long been expected that as the electron density is lowered, the exchange …

Low-disorder two-dimensional electron systems in the presence of a strong, perpendicular
magnetic field terminate at very small Landau level filling factors in a Wigner crystal (WC) …