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物理学报. 1991, 40(3): 469-475.
doi: 10.7498/aps.40.469.
一维无公度系统Aubry模型的Anderson转变
- 收稿日期: 1990-05-16
- 刊出日期: 2005-07-01
摘要: 数值计算结果表明,一维无公度系统Aubry模型存在扩展态、中间态和局域态。由扩展态向局域态的转变,要经过处于势强度v=2t附近的一段过渡区。这个新的结果不同于用对偶性理论证明给出的结论,即当势强度V2t时都是局域态,在V=2t存在Anderson转变。
English Abstract
ANDERSON TRANSITION IN THE AUBRY MODEL OF ONE-DIMENSIONAL INCOMMENSURATE SYSTEMS
- Received Date:
16 May 1990
- Published Online:
01 July 2005
Abstract: Using numerical calculation, it is found that there are extended states, intermadiate states and localized states in the Aubry model of one-dimensional incommensurate systems. The transition from extended states to localized states should pass through a regime in which the intermadiate states exist. The regime is situated at aboubt the potential strength V=2t. The new result is different from that of duality theory which predicts that all states are extended for V2t all states are localized, at V = 2t there exists Anderson transition.
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