Spin-Conserving Tunneling of Excitons in Diluted Magnetic Semiconductor Double Quantum Wells

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概要

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• 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.

• 2008-05-25

著者

• Souma Izuru

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Murayama Akihiro

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Murayama Akihiro

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

• Park Jiho

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

• Oka Yasuo

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

• Dangnelund Daniel

  Department of Physics, Chemistry and Biology, Linkoping University, S-58183, Linkoping, Sweden

• Buyanova Irina

  Department of Physics, Chemistry and Biology, Linkoping University, S-58183, Linkoping, Sweden

• Chen Weimin

  Department of Physics, Chemistry and Biology, Linkoping University, S-58183, Linkoping, Sweden

• Souma Izuru

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

関連論文

• Fabrication and Magnetooptical Properties of Nanostructures of Diluted Magnetic Semiconductors Integrated with Glass Thin Films
• Fabrication and Magnetooptical Properties of Nanostructures of Diluted Magnetic Semiconductors Integrated with Glass Thin Films
• Phonon-Induced Efficient Transfer of Spin-Polarized Excitons in Diluted Magnetic Semiconductor Double Quantum Wells
• Spin-Conserving Tunneling of Excitons in Diluted Magnetic Semiconductor Double Quantum Wells

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