Renormalization approach to the Kubo formula in Fibonacci systems -: art. no. 174205

被引：20
|
作者：
Sánchez, V
Pérez, LA
Oviedo-Roa, R
Wang, CM
机构：
[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
[2] IPN, ESIME Culhuacan, Mexico City 04430, DF, Mexico
来源：
PHYSICAL REVIEW B | 2001年 / 64卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.64.174205
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A renormalization method is developed for the Kubo-Greenwood formula, in order to analyze the electronic transport in large quasiperiodic lattices at zero temperature, within a tight-binding model. The results show a scaling invariance of the conduction spectrum around the transparent state, where a periodic oscillating pattern is found. However, the dc conductivity averaged over the transmission window of the leads presents a significant reduction, when the system size becomes macroscopic. A detailed study of the boundary-condition effects on the ac conductivity reveals the robustness of the transparent states, contrary to that observed in other high dc-conduction states.
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页数：11
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