TIME-RESOLVED PHONON ABSORPTION IN THE FRACTIONAL QUANTUM HALL REGIME

Authors
DIGBY JE ZEITLER U MELLOR CJ KENT AJ BENEDICT KA CHALLIS LJ MIDDLETON JR CHENG T
Citation
Je. Digby et al., TIME-RESOLVED PHONON ABSORPTION IN THE FRACTIONAL QUANTUM HALL REGIME, Surface science, 362(1-3), 1996, pp. 34-37
Citations number
9
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
362
Issue
1-3
Year of publication
1996
Pages
34 - 37
Database
ISI
SICI code
0039-6028(1996)362:1-3<34:TPAITF>2.0.ZU;2-R
Abstract
We report time-resolved measurement by phonon absorption in the fracti onal quantum HalI regime. Experiments have been conducted on an n-type heterojunction grown on a 1.8 mm GaAs wafer. The start of the absorpt ion signal is consistent with the ballistic phonon time-of-flight. The initial rise time is consistent with the time constant of our device and external circuits. This is followed by unusually slow rise and dec ay times.