Spin-polarized light-emitting diodes with Mn-doped InAs quantum dot nanomagnets as a spin aligner.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 15794597.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
We have fabricated and characterized surface-emitting, spin-polarized light-emitting diodes with a Mn-doped InAs dilute magnetic quantum dot spin-injector and contact region grown by low-temperature molecular beam epitaxy, and an In(0.4)Ga(0.6)As quantum dot active region. Energy-dispersive X-ray and electron energy loss spectroscopies performed on individual dots indicate that the Mn atoms incorporate within the dots themselves. Circularly polarized light is observed up to 160 K with a maximum degree of circular polarization of 5.8% measured at 28 K, indicating high-temperature spin injection and device operation.
Medical subject headings
- Arsenicals
- Indium
- Magnetics
- Manganese
- Nanotechnology
- Nanotubes
- Quantum Dots