RELATIVISTIC PHOTOEMISSION THEORY FOR SPACE-FILLING POTENTIALS

被引:16
作者
GRASS, M
BRAUN, J
BORSTEL, G
机构
[1] Department of Physics, University of Osnabrück
来源
PHYSICAL REVIEW B | 1994年 / 50卷 / 20期
关键词
D O I
10.1103/PhysRevB.50.14827
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present as a direct generalization of the recently developed full-potential photoemission theory a relativistic theory for space-filling cell potentials. This theory is based on the well-known one-step model of photoemission. The Dirac equation is solved for space-filling cell potentials, using the relativistic phase functional approach. A practical scheme to calculate the generalized spin-density matrix of the photocurrent is described. The relationship between the new model and the widely used relativistic muffin-tin-like theory, as well as the connection to nonrelativistic full-potential photoemission is discussed. Moreover, a detailed analysis of the angular matrix elements and the selection rules for a single-cell potential in the relativistic and nonrelativistic case are given. © 1994 The American Physical Society.
引用
收藏
页码:14827 / 14837
页数:11
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