QUASI-PARTICLE BEHAVIOR OF COMPOSITE FERMIONS IN THE HALF-FILLED LANDAU-LEVEL

Authors
KOPIETZ P CASTILLA GE
Citation
P. Kopietz et Ge. Castilla, QUASI-PARTICLE BEHAVIOR OF COMPOSITE FERMIONS IN THE HALF-FILLED LANDAU-LEVEL, Physical review letters, 78(2), 1997, pp. 314-317
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
2
Year of publication
1997
Pages
314 - 317
Database
ISI
SICI code
0031-9007(1997)78:2<314:QBOCFI>2.0.ZU;2-Y
Abstract
We calculate the effect of infrared fluctuations of the Chem-Simons ga uge field on the single particle Green's function of composite fermion s in the half-filled Landau level via higher-dimensional bosonization on a curved Fermi surface. We find that composite fermions remain well -defined quasiparticles, with an effective mass given by the mean-fiel d value, but with anomalously large damping and a spectral function th at contains considerable weight away from the quasiparticle peak.