Electron and Hole Spin Relaxation in InAs Quantum Dots and Quasi-2D Structure

T. Li*, X. H. Zhang, X. Huang, Y. G. Zhu, L. F. Han, X. J. Shang, Z. C. Niu

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

Abstract

Temperature dependence of hole and electron spin relaxation times in both InAs quantum dots (QDs) and quasi-two-dimensional (2D) monolayers has been investigated experimentally using time-resolved photoluminescence (TRPL). The results show that hole spin relaxation time is long enough to be comparable with that of electrons in the quasi-2D InAs structure, but is one order of magnitude smaller than the electron spin relaxation time in QDs structure. It is shown that both hole and electron spin relaxation times decrease monotonically with increasing temperature for InAs QDs, but show non-monotonic temperature- dependent behavior for the quasi-2D structure. Different spin relaxation mechanisms responsible for spin relaxation in the two structures have been discussed.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages715-716
Number of pages2
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 25 Jul 201030 Jul 2010

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference30th International Conference on the Physics of Semiconductors, ICPS-30
Country/TerritoryKorea, Republic of
CitySeoul
Period25/07/1030/07/10

Keywords

  • InAs quantum dots
  • Spin relaxation
  • time-resolved PL

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