DYNAMIC CONDUCTIVITY OF HEAVY FERMION SYSTEMS - EFFECT OF IMPURITY SCATTERING

被引：20

作者：

FREYTAG, R

KELLER, J

机构：

[1] Institute for Theoretical Physics, University of Regensburg, Regensburg

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1990年 / 80卷 / 02期

关键词：

D O I：

10.1007/BF01357509

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The influence of impurity scattering on a heavy fermion system is studied within a mean-field approximation of the Anderson Hamiltonian and using a coherent potential approximation for the impurity scattering. Two types of scattering mechanisms are investigated: missing f-ions and potential scatterring centers. The dynamical conductivity shows a nearow peak at low frequencies scaling with the effective mass of the heavy quasi-particles together with a peak at finite frequencies due to interband transitions. These features are also found in experimental results on heavy fermion systems. © 1990 Springer-Verlag.

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页码：241 / 247

页数：7

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