Recent developments in the theory of HARPES

被引：14

作者：

Minar, J. ^{[1
]}

Braun, J. ^{[1
]}

Ebert, H. ^{[1
]}

机构：

[1] Univ Munich, Dept Chem, D-81377 Munich, Germany

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2013年 / 190卷

关键词：

Angle resolved photo emission; One-step model of photo emission; Electronic correlations; Dynamical mean field theory; ANGLE-RESOLVED PHOTOEMISSION; ELECTRONIC-STRUCTURE CALCULATIONS; HIGH-RESOLUTION; BAND-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; DIRECT TRANSITIONS; VALENCE BANDS; SYSTEMS;

D O I：

10.1016/j.elspec.2012.10.003

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Various technical developments extended the potential of angle-resolved photo emission spectroscopy tremendously during the last one or two decades. In particular improved momentum and energy resolution as well as the use of photon energies from few eV up to several key makes this experimental technique a rather unique tool to investigate the electronic properties of solids and surfaces. Obviously, this rises the need for a corresponding theoretical formalism that allows to accompany experimental hard X-ray angle-resolved photo emission (HARPES) studies in an adequate way. This could be achieved by various recent developments on the basis of the one-step model of photo emission: all spin-orbit effects are accounted for by a fully relativistic description. Calculating phonon properties allows a direct comparison with features in the HARPES spectra caused by temperature induced disorder. The same holds for the influence of electronic correlation effects. These are accounted for by means of the dynamical mean field theory that removes the most serious short comings of standard calculations based on the conventional local spin-density approximation. Finally, accounting for the photon momentum and going beyond the single scatterer approximation for the final state allows to deal quantitatively with HARKS. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：159 / 164

页数：6

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