Relaxation of Non-Stationary States due to a Sudden Change of an Energy Level in a Quantum Dot

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概要

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• A relaxation process is studied quanttttaa unechanically in a qttanttrrn dot which is weakly cottpledto twc>electrodes, ttsirag the real Linne path integration method. We consider the followingsittration: at first, the stationary ctrrrent flows through the qttanturn dot which has a singleenergy level c)0. After a sudden change in the dot level to w0, the electronic state starts to relaxto another stationary state. We investigate the transient behaviors of the ntrmber of electronsin the dot and the current throtugh the Jvarriers. They oscillate with the frequencies (;g - p,.),where p. (p -::- L, R) are the Ferttai levels of' two electrodes. The relative phase of these oscillationis deterrrtined by cog - cog. The qtranturn effects decreases with time slower than the ordinaryexponential decaying given Icy the roaster eqttation.

• 社団法人日本物理学会の論文
• 1997-03-15

著者

• Aono Tomosuke

  Deportment Of Physics Gakushuin University

• AONO Tomosuke

  Depatment of Physics,Faculty of Science and Technology,Keio University

関連論文

• Linear Conductance through Parallel Quantum Dot Dimer below the Kondo Temperature
• Conductance through Quantum Dot Dimer Below the Kondo Temperature
• Relaxation of Non-Stationary States due to a Sudden Change of an Energy Level in a Quantum Dot

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