標題: Observation of disordered wave functions with conical second-harmonic generation and verification of transition from extended to prelocalized states in weak localization
作者: Lin, Y. C.
Tuan, P. H.
Yu, Y. T.
Liang, H. C.
Su, K. W.
Huang, K. F.
Chen, Y. F.
電子物理學系
Department of Electrophysics
公開日期: 18-一月-2013
摘要: We experimentally acquire the disordered wave functions from the conical second-harmonic generation to explore the variation of weak localization from extended to prelocalized states. We numerically verify that the experimental density distributions with different extents of weak localization can be excellently analyzed with a reduced version of the nonlinear sigma model (RV-NLS model). Moreover, we demonstrate that the chi-square distributions with fractional degrees of freedom are practically equivalent to the density distributions of the RV-NLS model. Our finding indicates that the concept of fractional degrees of freedom can be applied to the statistical properties of disordered wave functions. DOI: 10.1103/PhysRevB.87.045117
URI: http://dx.doi.org/10.1103/PhysRevB.87.045117
http://hdl.handle.net/11536/21036
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.87.045117
期刊: PHYSICAL REVIEW B
Volume: 87
Issue: 4
結束頁: 
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