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Title: Magnetic dichroism in core-level photoemission from Gd(0001)

Abstract

This work reports on magnetic dichroism in photoemission from the Gd 4l(l=s,p,d,f ) core level of in-plane magnetized Gd films excited with linearly, circularly, and unpolarized light. Thin Gd films of about 100 ML thickness were evaporated onto a W(110) substrate at room temperature, and subsequently annealed to 700 K to form an ordered layer exhibiting a (0001) surface. The dichroism measurements were performed by physically rotating the sample azimuth so as to change the direction of the magnetization axis relative to the incident light. The magnetic dichroism asymmetries were obtained by calculating the normalized difference between spectra obtained with the two mutually orthogonal orientations of the magnetization. Strong asymmetries were observed, even if exciting the spectra by means of unpolarized light. The experimental results are compared to three-step photoemission cluster calculations based on a relativistic full potential algorithm respecting magnetic exchange. (c) 2000 American Institute of Physics.

Authors:
 [1];  [2];  [1];  [3];  [4];  [1]
  1. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  2. Academia Sinica, Institute of Physics, Nangkang, Taipei 11529, Taiwan (China)
  3. (United States)
  4. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
20216216
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; GADOLINIUM; PHOTOEMISSION; MAGNETIC CIRCULAR DICHROISM; THIN FILMS; MAGNETIZATION; TEMPERATURE DEPENDENCE; ELECTRON DIFFRACTION; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Morais, J., Fecher, G. H., Denecke, R., Department of Physics, University of California, Davis, California 95616, Hussain, Z., and Fadley, C. S. Magnetic dichroism in core-level photoemission from Gd(0001). United States: N. p., 2000. Web. doi:10.1063/1.373196.
Morais, J., Fecher, G. H., Denecke, R., Department of Physics, University of California, Davis, California 95616, Hussain, Z., & Fadley, C. S. Magnetic dichroism in core-level photoemission from Gd(0001). United States. doi:10.1063/1.373196.
Morais, J., Fecher, G. H., Denecke, R., Department of Physics, University of California, Davis, California 95616, Hussain, Z., and Fadley, C. S. Mon . "Magnetic dichroism in core-level photoemission from Gd(0001)". United States. doi:10.1063/1.373196.
@article{osti_20216216,
title = {Magnetic dichroism in core-level photoemission from Gd(0001)},
author = {Morais, J. and Fecher, G. H. and Denecke, R. and Department of Physics, University of California, Davis, California 95616 and Hussain, Z. and Fadley, C. S.},
abstractNote = {This work reports on magnetic dichroism in photoemission from the Gd 4l(l=s,p,d,f ) core level of in-plane magnetized Gd films excited with linearly, circularly, and unpolarized light. Thin Gd films of about 100 ML thickness were evaporated onto a W(110) substrate at room temperature, and subsequently annealed to 700 K to form an ordered layer exhibiting a (0001) surface. The dichroism measurements were performed by physically rotating the sample azimuth so as to change the direction of the magnetization axis relative to the incident light. The magnetic dichroism asymmetries were obtained by calculating the normalized difference between spectra obtained with the two mutually orthogonal orientations of the magnetization. Strong asymmetries were observed, even if exciting the spectra by means of unpolarized light. The experimental results are compared to three-step photoemission cluster calculations based on a relativistic full potential algorithm respecting magnetic exchange. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.373196},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}