Back to Search
Start Over
Suppression of nuclear polarization near the surface of optically pumped GaAs
- Source :
- Physical Review B. 76
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- We measured the spin dependence of polarized neutrons reflected by a GaAs sample as it was optically pumped. This dependence was correlated with the helicity of the circularly polarized light and found to oscillate with neutron wave vector transfer. The data provide definitive evidence that optically induced nuclear polarization in GaAs is not uniform with depth. Quantitative analysis of the data shows that nuclear polarization is suppressed for tens of nanometers near the surface of GaAs.
- Subjects :
- Physics
Condensed matter physics
Nuclear Theory
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Condensed Matter Physics
Polarization (waves)
Helicity
Electromagnetic radiation
Electronic, Optical and Magnetic Materials
Wave vector
Neutron
Neutron reflectometry
Atomic physics
Nuclear Experiment
Nucleon
Circular polarization
Subjects
Details
- ISSN :
- 1550235X and 10980121
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........349b6be49c59b2a3f8ea1998ed2535f3