First-Principles Study of Time-Dependent Phenomena in Photon-Assisted Tunneling: I. An Electron Injected into Two-Dimensional Lozenge Quantum Dot
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概要
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We theoretically study the dynamical properties of an electron confined in a two-dimensional (2D) quantum dot (QD) under photon illumination, by solving the time-dependent (TD) Schrödinger equation numerically by the finite difference method in both real space and actual time. To deepen our understanding of the TD features of photon-assisted tunneling (PAT), we employ projection analysis, in which the TD wave function at a QD is decomposed into (static) resonant states by calculating the inner products among them. This analysis further enables the deduction of effective lifetime, by which one can infer the actual period of the electron confined in the QD. The wave number distribution for the transmitted electron is also discussed to examine the propagation of the electron through the system.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-03-15
著者
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Takeda Kyozaburo
Department of Materials Science and Engineering, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
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Takeda Kyozaburo
Department of Electrical Engineering and Bioscience, Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
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Muraguchi Masakazu
Department of Electrical Engineering and Bioscience, Waseda University, Shinjuku, Tokyo 169-8555, Japan
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Muraguchi Masakazu
Department of Materials Science and Engineering, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
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