Current-Induced Entanglement of Nuclear Spins in Quantum Dots (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

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• We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current accompanied by the spin flip. This situation is relevant to a leakage current in spin-blocked regions where electrons cannot be transported unless their spins are flipped. The current gradually increases the components of larger total spin of nuclei. This correlation among the nuclear spins markedly enhances the spin-flip rate of electrons and hence the leakage current. The enhancement of the current is observable when the residence time of electrons in the quantum dots is shorter than the dephasing time T_2 of nuclear spins.

• 社団法人日本物理学会の論文
• 2004-02-15

著者

• Eto Mikio

  Faculty Of Science And Technology Keio University

• Murata M

  Faculty Of Science And Technology Keio University

• ASHIWA Takashi

  Faculty of Science and Technology, Keio University

• MURATA Mikio

  Faculty of Science and Technology, Keio University

• Ashiwa Takashi

  Faculty Of Science And Technology Keio University

関連論文

• Current-Induced Entanglement of Nuclear Spins in Quantum Dots (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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• Mean-Field Calculations of Transport Properties through Magnetic Point Contacts
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• Optical Phonon Lasing in Semiconductor Double Quantum Dots
• Scaling Analysis for Kondo Effect in Quantum Dot Embedded in Aharonov-Bohm Ring
• Effects of Polaron Formation in Semiconductor Quantum Dots on Transport Properties
• Enhanced Spin Hall Effect in Semiconductor Heterostructures with Artificial Potential
• Josephson Current through Semiconductor Nanowire with Spin--Orbit Interaction in Magnetic Field
• Exchange Coupling in Silicon Double Quantum Dots
• Quantum Dot Spin Filter in Resonant Tunneling and Kondo Regimes
• Electronic States and Transport Phenomena in Quantum Dot Systems
• Josephson Current through Semiconductor Nanowire with Spin-Orbit Interaction in Magnetic Field

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