Electronic States and Transport Phenomena in Quantum Dot Systems
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概要
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Electronic states and transport phenomena in semiconductor quantum dots are studied theoretically. Taking account of the electron-electron Coulomb interaction by the exact diagonalization method, the ground state and low-lying excited states are calculated as functions of magnetic field. Using the obtained many-body states, we discuss the temperature dependence of the conductance peaks in the Coulomb oscillation. In the Coulomb blockade region, elastic and inelastic cotunneling currents are evaluated under finite bias voltages. The cotunneling conductance is markedly enhanced by the Kondo effect. In coupled quantum dots, molecular orbitals and electronic correlation influence the transport properties.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-03-30
著者
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Eto Mikio
Faculty Of Science And Technology Keio University
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Eto Mikio
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
関連論文
- Current-Induced Entanglement of Nuclear Spins in Quantum Dots (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Spin Polarization at Semiconductor Point Contacts in Absence of Magnetic Field(Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Scaling Analysis for Kondo Effect in Quantum Dot Embedded in Aharonov-Bohm Ring(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Mean-Field Calculations of Transport Properties through Magnetic Point Contacts
- Transport Properties through Atomic-Size Point Contacts of Multi-Band Metals
- 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