1999/07/12 by A. Karlhede, K. Lejnell, S. L. Sondhi · 1 citation
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.60.15948
13 pages, 7 figures, Revtex
arxiv created 1999/07/12 · openalex publication_date 1999/12/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We consider the edge dynamics of a compact, fully spin-polarized state at filling factor \ensuremathν=1. We show that there are two sets of collective excitations localized near the edge: the much studied, gapless, edge magnetoplasmon but also an additional edge spin wave that splits off below the bulk spin wave continuum. We show that both of these excitations can soften at finite wave vectors as the potential confining the system is softened, thereby leading to edge reconstruction by spin texture or charge density wave formation. We note that a commonly employed model of the edge confining potential is nongeneric in that it systematically underestimates the texturing instability.