Dynamics of an Electron in Quasiperiodic Systems.I.Fibonacci Model
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概要
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Dynamics of an electron in quasiperiodic systems is studied numerically. Calculalions are carried out for the one-dimensional tight-binding model with diagonal oroff-diagonal modulation obeying the Fibonacci sequence. The width of thewavepacket of an electron put on a single site at time t=O exhibits such an overalltime evolution as j -t' (0<cv<1). The dynamical index cr decreases con-tinuously with increasing the modulation strength. This anomalous power-law diffusion is successfully interpreted in terms of renormalization group arguments in boththe strong and weak modulation limits.
- 社団法人日本物理学会の論文
- 1988-01-15
著者
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Abe Shuji
Electrotechnical Laboratory
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HIRAMOTO Hisashi
Institute of Materials Science,University of Tsukuba
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Hiramoto Hisashi
Institute Of Materials Science University Of Tsukuba
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Abe Shuji
Electrotechnical Laboratory Tsukuba Research Center
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