First-principles calculation of hot-electron scattering in metals -: art. no. 235125

被引：95

作者：

Ladstädter, F ^{[1
]}

Hohenester, U ^{[1
]}

Puschnig, P ^{[1
]}

Ambrosch-Draxl, C ^{[1
]}

机构：

[1] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 23期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1103/PhysRevB.70.235125

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze hot-electron scatterings in metals within a first-principles approach based on density-functional-theory band-structure calculations and on Green-function calculations within the GW approximation. Results for hot-electron lifetimes and the differential cross section of the underlying scattering process are presented for Al, Cu, Au, and Pd, and analyzed with emphasis on the differences and similarities with respect to the predictions of the homogeneous electron-gas model. The electron-gas results can nicely explain the scattering characteristics in aluminium, whereas in copper and gold a strong enhancement of the hot-electron lifetimes is found and attributed to d-band screening. Finally, in palladium d-band scatterings are responsible for a drastic modification of the scattering characteristics, which no longer can be explained by the homogeneous electron-gas results.

引用

页码：1 / 10

页数：10

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