ACTIVATION GAPS AND MASS ENHANCEMENT OF COMPOSITE FERMIONS

Authors
PARK K JAIN JK
Citation
K. Park et Jk. Jain, ACTIVATION GAPS AND MASS ENHANCEMENT OF COMPOSITE FERMIONS, Physical review letters, 81(19), 1998, pp. 4200-4203
Citations number
15
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
19
Year of publication
1998
Pages
4200 - 4203
Database
ISI
SICI code
0031-9007(1998)81:19<4200:AGAMEO>2.0.ZU;2-8
Abstract
We compute the activation gaps for fractional quantum Hall states at f illing fractions nu = n/(2n + 1) incorporating modifications in the in teraction potential due to the nonzero transverse width of the electro n wave function and find good agreement with experiments in high-mobil ity samples with high density. The results also shed light on the myst erious enhancement of the composite fermion mass for fractions with la rge n.