Pulsed Electrical Spin Injection into InGaAs Quantum Dots: Studies of the Electroluminescence Polarization Dynamics
Journal Article
·
· AIP Conference Proceedings
- Institut fuer Angewandte Physik and DFG Center for Functional Nanostructures (CFN), Universitaet Karlsruhe, 76131 Karlsruhe (Germany)
We present time-resolved studies of the spin polarization dynamics during and after initialization through pulsed electrical spin injection into InGaAs quantum dots embedded in a p-i-n-type spin-injection light-emitting diode. Experiments are performed with pulse widths in the nanosecond range and a time-resolved single photon counting setup is used to detect the subsequent electroluminescence. We find evidence that the achieved spin polarization shows an unexpected temporal behavior, attributed mainly to many-carrier and non-equilibrium effects in the device.
- OSTI ID:
- 21371410
- Journal Information:
- AIP Conference Proceedings, Vol. 1199, Issue 1; Conference: 29. international conference on the physics of semiconductors, Rio de Janeiro (Brazil), 27 Jul - 1 Aug 2008; Other Information: DOI: 10.1063/1.3295463; (c) 2009 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTROLUMINESCENCE
ELECTRON GAS
GALLIUM ARSENIDES
INDIUM ARSENIDES
LIGHT EMITTING DIODES
MOLECULAR BEAM EPITAXY
PHOTONS
POLARIZATION
PULSES
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SPIN ORIENTATION
TIME RESOLUTION
ARSENIC COMPOUNDS
ARSENIDES
BOSONS
CRYSTAL GROWTH METHODS
ELEMENTARY PARTICLES
EMISSION
EPITAXY
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
LUMINESCENCE
MASSLESS PARTICLES
MATERIALS
NANOSTRUCTURES
ORIENTATION
PHOTON EMISSION
PNICTIDES
RESOLUTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
TIMING PROPERTIES
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTROLUMINESCENCE
ELECTRON GAS
GALLIUM ARSENIDES
INDIUM ARSENIDES
LIGHT EMITTING DIODES
MOLECULAR BEAM EPITAXY
PHOTONS
POLARIZATION
PULSES
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SPIN ORIENTATION
TIME RESOLUTION
ARSENIC COMPOUNDS
ARSENIDES
BOSONS
CRYSTAL GROWTH METHODS
ELEMENTARY PARTICLES
EMISSION
EPITAXY
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
LUMINESCENCE
MASSLESS PARTICLES
MATERIALS
NANOSTRUCTURES
ORIENTATION
PHOTON EMISSION
PNICTIDES
RESOLUTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
TIMING PROPERTIES