3 papers
cond-mat.str-el2026
Stability, Collective Modes, and Quasiparticle-Phonon Coupling of Metallic Wigner Crystals in Rhombohedral Graphene
Sunghoon Kim, Yang-Zhi Chou, Jay D. Sau +1
Recent transport experiments in rhombohedral multilayer graphene have reported evidence for metallic Wigner crystals (mWCs), characterized by the coexistence of crystalline order a…
cond-mat.str-el2026
Disorder, Interactions, and the Fate of the Two-Dimensional Electron System: Wigner Crystal, Metal-Insulator Transition, and Amorphous Solid
Sankar Das Sarma
We present a unified theoretical study of the interplay between Coulomb disorder and Coulomb interactions in two-dimensional electron systems, covering the Wigner crystallization t…
cond-mat.mes-hall2026
Fractional quantum Hall effect at ν=1/2 in wide GaAs quantum wells: Subband structure, exact diagonalization, and the magnitude of the gap
Sankar Das Sarma
Recent experiments on a wide GaAs quantum well report a fractional quantum Hall state at filling factor ν=1/2 with an unusually large activation gap, a sharp maximum of the gap as…