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Abstract
We propose a new disorder-induced insulator-metal transition of one-electron states, which may be called the "inverse Anderson transition." We first make a highly degenerated localized states by constructing a three-dimensional periodic system possessing only flat dispersion relations. When we introduce a disorder into it, a finite-size scaling of the level statistics shows two clear (localization-delocalization and delocalization-localization) transitions for a wide range of the energy, with increasing the degree of disorder. These transitions are confirmed also by finding the system-size-independent f() characteristic of the wave function.
Journal
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- Physical Review Letters
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Physical Review Letters 96 (12), 126401-1-126401-4, 2006-03
American Physical Society
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Details
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- CRID
- 1050845764162415872
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- NII Article ID
- 120006738886
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- NII Book ID
- AA00773679
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- ISSN
- 00319007
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- HANDLE
- 10191/4926
- 10191/4973
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- CiNii Articles
- KAKEN