Electrons in topological flat bands can form new topological states driven by correlation
effects. The pentalayer rhombohedral graphene/hexagonal boron nitride (hBN) moiré …

The quantum Wigner crystal is a many-body state where Coulombic repulsion quenches the
kinetic energy of electrons, causing them to crystallize into a lattice. Experimental realization …

In the extreme quantum limit, when the Landau level filling factor ν< 1, the dominant electron-
electron interaction in low-disorder two-dimensional electron systems leads to exotic many …

In this Review, we report compelling transport evidence for the formation of a quantum
Wigner solid in two-dimensional (2D) electron systems in silicon metal–oxide …

Motivated by recently reported magnetic-field-induced topological phases in ultracold atoms
and correlated Moiré materials, we investigate topological phase transitions in a minimal …

The skyrmion crystal (SkX) and helix (HL) phases, present in typical chiral magnets, can
each be considered as forms of density waves but with distinct topologies. The SkX exhibits …

We find that the double-threshold voltage-current characteristics in the insulating regime in
the ultraclean two-valley two-dimensional electron system in SiGe/Si/SiGe quantum wells …

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) …

We examine the ordering, pinning, and dynamics of two-dimensional pattern-forming
systems interacting with a periodic one-dimensional substrate. In the absence of the …

We report the observation of two-threshold voltage-current characteristics accompanied by a
peak of broadband current noise between the two threshold voltages in the insulating state …