Suppression of LO phonon scattering in Landau quantized quantum dots

Authors
Murdin, BN Hollingworth, AR Kamal-Saadi, M Kotitschke, RT Ciesla, CM Pidgeon, CR Findlay, PC Pellemans, HPM Langerak, CJGM Rowe, AC Stradling, RA Gornik, E
Citation
Bn. Murdin et al., Suppression of LO phonon scattering in Landau quantized quantum dots, PHYS REV B, 59(12), 1999, pp. R7817-R7820
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
12
Year of publication
1999
Pages
R7817 - R7820
Database
ISI
SICI code
0163-1829(19990315)59:12<R7817:SOLPSI>2.0.ZU;2-U
Abstract
Picosecond time-resolved far-infrared measurements are presented of the sca ttering between conduction-band states in a doped quasi quantum dot. These states are created by the application of a magnetic field along the growth direction of an InAs/AlSb quantum well. A clear suppression of the cooling rate is seen, from 10(12) s(-1) when the level spacing is equal to the phon on energy, to 10(10) s(-1) away from this resonance, and thus the results p rovide unambiguous evidence for the phonon bottleneck. Furthermore, the lif etimes had only weak dependence on temperature between 4 and 80 K. [S0163-1 829(99)50612-7].