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

Journal Article · Fri Dec 23 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3666577· OSTI ID:21612435

Li, T; Zhang, X H; Huang, X; Zhu, Y G; Han, L F; Shang, X J; Niu, Z C ^[1]

---

1. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijng 100083 (China)

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.

• OSTI ID: 21612435
• Journal Information: AIP Conference Proceedings, Vol. 1399, Issue 1; Conference: 30. international conference on the physics of semiconductors, Seoul (Korea, Republic of), 25-30 Jul 2010; Other Information: DOI: 10.1063/1.3666577; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTAL GROWTH
ELECTRONS
HOLES
INDIUM ARSENIDES
MOLECULAR BEAM EPITAXY
PHOTOLUMINESCENCE
POLARIZATION
QUANTUM DOTS
RELAXATION
RELAXATION TIME
SPIN
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
TIME RESOLUTION
ANGULAR MOMENTUM
ARSENIC COMPOUNDS
ARSENIDES
CRYSTAL GROWTH METHODS
ELEMENTARY PARTICLES
EMISSION
EPITAXY
FERMIONS
INDIUM COMPOUNDS
LEPTONS
LUMINESCENCE
NANOSTRUCTURES
PARTICLE PROPERTIES
PHOTON EMISSION
PNICTIDES
RESOLUTION
TIMING PROPERTIES