Ultrathin Fe film on Cu(001): Exchange splitting of image states from first principles

被引：6

作者：

Achilli, S. ^{[1
]}

Caravati, S.

Trioni, M. I.

机构：

[1] Univ Milan, Dept Mat Sci, I-20125 Milan, Italy

[2] Udr Milano Bicocca, CNISM, I-20125 Milan, Italy

来源：

SURFACE SCIENCE | 2007年 / 601卷 / 18期

关键词：

photoemission; excited states; metallic surfaces; density functional calculations; Green's function methods;

D O I：

10.1016/j.susc.2007.04.175

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The theoretical investigation of the image states in front of an ultrathin iron film grown on copper has been performed by means of the embedding method and a recently developed procedure for the inclusion of the image potential tail in a first principle calculation. From the electronic response to an applied electric field, the image plane position has been evaluated. This also allows one to obtain useful information about the spin dependent screening properties of the system. Exchange splitting, effective mass, and lifetime of such surface states result in good agreement with recently performed two-photon photoemission experiments [see A.B. Schmidt, M. Pickel, M. Wiemhofer, M. Donath, M. Weinelt, Phys. Rev. Lett. 95 (2005) 107402]. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：4048 / 4052

页数：5

共 16 条

[1] Reconstruction of the clean and H covered "magnetic live surface layer" of Fe films grown on Cu(100) [J].