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

Journal Article · Mon May 01 04:00:00 EDT 2000 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.373196· OSTI ID:20216216

Morais, J ^[1]; Fecher, G H ^[2]; Denecke, R ^[1]; Hussain, Z ^[3]; Fadley, C S ^[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. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

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.

• OSTI ID: 20216216
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 87; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
GADOLINIUM
MAGNETIC CIRCULAR DICHROISM
MAGNETIZATION
PHOTOEMISSION
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THIN FILMS