Decay properties of the finite-temperature density matrix in metals

被引：73

作者：

Goedecker, S ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.58.3501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using ordinary Fourier analysis, the asymptotic decay behavior of the density matrix F(r, r') is derived for the case of a metal at a finite electronic temperature. An oscillatory behavior that is damped exponentially with increasing distance between r and r' is found. The decay rate is not only determined by the electronic temperature, but also by the Fermi energy. The theoretical predictions are confirmed by numerical simulations.

引用

页码：3501 / 3502

页数：2

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