Dynamics of Quantum-Dot Turnstile in Adiabatic Approximation

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概要

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• We derive an expression for the current in a quantum-dot turnstile device in the lowest order of tunnel processes. The electrochemical potential μ in the quantum dot is determined from the current continuity across both barriers. By the use of the adiabatic approximation, the quantized current plateaus in the I-V curve are obtained for the device with symmetric barriers oscillating with a phase difference π. We find that both the height and the position of the steps change as the gate voltage is varied. We also show how the current and the electron number in a quantum dot vary as a function of time.

• 社団法人日本物理学会の論文
• 1994-07-15

著者

• HATANO Tsuyoshi

  Department of Physical Electronics, Faculty of Engineering, Hiroshima University

• ISAWA Yoshimasa

  Department of Physical Electronics, Faculty of Engineering, Hiroshima University

• Hatano T

  Hiroshima Univ. Higashihiroshima

• Hatano Tsuyoshi

  Department Of Physical Electronics Faculty Of Engineering Hiroshima University

• Isawa Yoshimasa

  Department Of Physical Electronics Faculty Of Engineering Hiroshima University

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• Influence of a Driven Magnetic Domain Wall on Resistivity in a Thin Ferromagnetic Wire : Condensed Matter: Electronic Properties, etc.
• Multilevel Effect on the Josephson Current through a Quantum Dot
• Resistivity due to Domain Wall Excitation in Thin Wires of Ferromagnetic Metals : Condensed Matter: Electronic Properties, etc.
• Transport through a Metallic Quantum Dot in the Limit of Strong Coulomb Interaction : Condensed Matter: Electronic Properties, etc.
• Co-tunneling Current through a Single Quantum Dot
• Effects of Potential Fluctuations in Quantum Dot on Coulomb Oscillation
• Spontaneous and Stimulated Emission of Radiation from an Atom in a Resonator
• Theory of Tunneling Processes in Quantum Structures
• Transport through Discrete Energy Levels in Quantum Dots
• Spatial Variation of Local Current Noise Due to Impurity Scattering and Local Charge-Induced Noise

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