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1. Spin polarization in photoelectron spectroscopy from antiferromagnets: Cr films on Fe(110) from first principles

Author

Bose, P., Zahn, P., Mertig, I., and Henk, J.

Subjects
*POLARIZATION spectroscopy, *PHOTOELECTRON spectroscopy, *ANTIFERROMAGNETISM, *ELECTRONIC structure, *PHOTOEMISSION, *FERMI surfaces, *MAGNETIC structure, *CHROMIUM
Abstract

Abstract: The spin- and angle-resolved photoelectron spectroscopy from ultrathin Cr films on Fe(110) is investigated by means of first-principles electronic structure and photoemission calculations. The antiferromagnetic ordering in the Cr films leads in dependence on film thickness to a rapidly decreasing and oscillating photoelectron spin polarization, in reasonable agreement with recent experiments (Dedkov (2007) ). The oscillation period is explained by quantum-well states in the Cr film and by a Fermi surface nesting vector. The importance of transition matrix elements is highlighted. The findings point to a noncollinear magnetic structure at the Fe/Cr interface. [ABSTRACT FROM AUTHOR]

Published
2010
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