Eigenfunction fluctuations and correlations at the mobility edge in a two-dimensional system with spin-orbit scattering

Autor:	J. T. Chalker, I H Nahm, S N Evangelou, G J Daniell
Rok vydání:	1993
Předmět:	Physics Tight binding Condensed matter physics Scattering Condensed Matter::Strongly Correlated Electrons General Materials Science Multifractal system Spin–orbit interaction Eigenfunction Condensed Matter Physics Wave function Fick's laws of diffusion Spin-½
Zdroj:	Journal of Physics: Condensed Matter. 5:485-490
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/5/4/016
Popis:	The critical behaviour of wavefunctions at the Anderson metal-insulator transition is studied by numerical simulation, using as an example of a system with a mobility edge a two-dimensional tight-binding model with spin-orbit scattering. It is demonstrated that individual eigenstates have multifractal fluctuations of their probability density. The influence of these fluctuations on the two-particle correlations is examined via calculations of the wavevector and frequency dependence of the diffusion constant.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e6ef90027da51f6560ae2676009db08f https://doi.org/10.1088/0953-8984/5/4/016 Zobrazit plný text záznamu