Pinning-Mode Resonance of a Skyrme Crystal near Landau-Level Filling Factor v=1

Microwave pinning-mode resonances found around integer quantum Hall effects, are a signature of crystallized quasiparticles or holes. Application of in-plane magnetic field to these crystals, increasing the Zeeman energy, has negligible effect on the resonances just below Landau-level filling v = 2, but increases the pinning frequencies near v = 1, particularly for smaller quasiparticle or hole densities. The charge dynamics near v = 1, characteristic of a crystal order, are affected by spin, in a manner consistent with a Skyrme crystal.