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Suppression of LO phonon scattering in Landau quantized quantum dots

Murdin, B. N., Hollingworth, A. R., Kamal-Saadi, M., Kotitschke, R. T., Ciesla, C. M., Pidgeon, C. R., Findlay, P. C., Pellemans, H. P. M., Langerak, C. J. G. M., Rowe, A. C., Stradling, R. A. and Gornik, E. (1999) Suppression of LO phonon scattering in Landau quantized quantum dots Physical Review B, 59 (12).

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Abstract

Picosecond time-resolved far-infrared measurements are presented of the scattering 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 1012 s-1 when the level spacing is equal to the phonon energy, to 1010 s-1 away from this resonance, and thus the results provide unambiguous evidence for the phonon bottleneck. Furthermore, the lifetimes had only weak dependence on temperature between 4 and 80 K.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Murdin, B. N.b.murdin@surrey.ac.ukUNSPECIFIED
Hollingworth, A. R.UNSPECIFIEDUNSPECIFIED
Kamal-Saadi, M.UNSPECIFIEDUNSPECIFIED
Kotitschke, R. T.UNSPECIFIEDUNSPECIFIED
Ciesla, C. M.UNSPECIFIEDUNSPECIFIED
Pidgeon, C. R.UNSPECIFIEDUNSPECIFIED
Findlay, P. C.UNSPECIFIEDUNSPECIFIED
Pellemans, H. P. M.UNSPECIFIEDUNSPECIFIED
Langerak, C. J. G. M.UNSPECIFIEDUNSPECIFIED
Rowe, A. C.UNSPECIFIEDUNSPECIFIED
Stradling, R. A.UNSPECIFIEDUNSPECIFIED
Gornik, E.UNSPECIFIEDUNSPECIFIED
Date : 15 March 1999
Identification Number : 10.1103/PhysRevB.59.R7817
Additional Information : Published in Physical Review B, 59, R7817 - R7820. © 1999 The American Physical Society.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:44
Last Modified : 23 Sep 2013 18:34
URI: http://epubs.surrey.ac.uk/id/eprint/1735

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