Spin-Conserving Tunneling of Excitons in Diluted Magnetic Semiconductor Double Quantum Wells
2008 (English)In: Japanese Journal of Applied Physics, ISSN 0021-4922, Vol. 47, 3533-3536 p.Article in journal (Refereed) Published
Spin polarization in carrier tunneling was studied in double quantum wells by the polarized photoluminescence-excitation spectroscopy. The double quantum wells consist of a diluted magnetic quantum well of Zn0.77Cd0.15Mn0.08Se and a nonmagnetic quantum well of Zn0.82Cd0.18Se. Efficient spin-conserving tunneling of an exciton as an entity was observed from the nonmagnetic quantum well to the magnetic well. The spin-reversing tunneling was suppressed by two orders of magnitude in high magnetic field. The spin-conserving tunneling time was determined as 20 ps by time resolved photoluminescence measurement.
Place, publisher, year, edition, pages
2008. Vol. 47, 3533-3536 p.
Natural Sciences Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-44006DOI: 10.1143/JJAP.47.3533Local ID: 75404OAI: oai:DiVA.org:liu-44006DiVA: diva2:264867