Experimental Confirmation of the X-Ray Magnetic Circular Dichroism Sum Rules for Iron and Cobalt

C. T. Chen; Y. U. Idzerda; H.-J. Lin; N. V. Smith; G. Meigs; E. Chaban; G. H. Ho; E. Pellegrin; F. Sette

doi:10.1103/PhysRevLett.75.152

Experimental Confirmation of the X-Ray Magnetic Circular Dichroism Sum Rules for Iron and Cobalt

C. T. Chen, Y. U. Idzerda, H.-J. Lin, N. V. Smith, G. Meigs, E. Chaban, G. H. Ho, E. Pellegrin, and F. Sette

Phys. Rev. Lett. 75, 152 – Published 3 July 1995

Abstract

High precision, $L$ $_{2, 3}$ -edge photoabsorption and magnetic circular dichroism spectra of iron and cobalt were measured in transmission with in situ grown thin films, eliminating experimental artifacts encountered by the indirect methods used in all previous measurements. The magnetic moments determined from the integrals of these spectra are found to be in excellent agreement (within 3%) for the orbital to spin moment ratios, and in good agreement (within 7%) for the individual moments, with those obtained from Einstein–de Haas gyromagnetic ratio measurements, demonstrating decisively the applicability of the individual orbital and spin sum rules.

Received 12 May 1994

DOI:https://doi.org/10.1103/PhysRevLett.75.152

Authors & Affiliations

C. T. Chen¹, Y. U. Idzerda², H.-J. Lin¹, N. V. Smith¹, G. Meigs¹, E. Chaban¹, G. H. Ho³, E. Pellegrin¹, and F. Sette¹

¹AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974
²Naval Research Laboratory, Washington, DC 20375
³Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104