Pinning mode resonance of a Skyrme crystal near Landau level filling factor $ν$=1

Han Zhu, G. Sambandamurthy, Yong P. Chen, Pei-Hsun Jiang, Lloyd Engel, D. C. Tsui, L. N. Pfeiffer, K. W. West

Published 2009-07-29Version 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 $\nu=2$, but increases the pinning frequencies near $\nu=1$, particularly for smaller quasiparticle/hole densities. The charge dynamics near $\nu=1$, characteristic of a crystal order, are affected by spin, in a manner consistent with a Skyrme crystal.