Imaging of low-compressibility strips in the quantum Hall liquid

Authors
Finkelstein, G Glicofridis, PI Tessmer, SH Ashoori, RC Melloch, MR
Citation
G. Finkelstein et al., Imaging of low-compressibility strips in the quantum Hall liquid, PHYS REV B, 61(24), 2000, pp. R16323-R16326
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
61
Issue
24
Year of publication
2000
Pages
R16323 - R16326
Database
ISI
SICI code
0163-1829(20000615)61:24<R16323:IOLSIT>2.0.ZU;2-J
Abstract
Using subsurface charge accumulation scanning microscopy, we image strips o f low compressibility corresponding to several integer quantum Hall filling factors. We study in detail the strips at Landau level filling factors nu= 2 and 4. The observed strips appear significantly wider than predicted by t heory. We present a model accounting for the discrepancy by considering a d isorder-induced nonzero density of states in the cyclotron gap.