Magnetic circular dichroism in photoemission from rare earth materials: A new technique in surface and thin-film magnetism
- Freie Univ. Berlin, Berlin-Dahlem (Germany). Inst. fuer Experimentalphysik
Using circularly polarized x rays to excite photoelectrons from magnetically ordered rare-earth materials gives rise to large magnetic circular dichroism in photoemission (MCD-PE). The intensity of 4f-photoemission lines strongly depends on the orientation of sample magnetization with respect to the photon spin. To explore its potential for application as near-surface magnetometer with atomic-layer resolution, the authors studied MCD-PE at the (0001)-surfaces of Gd and Tb where the magnetization of the topmost atomic layer--by help of the surface core-level shift--is spectroscopically separated from the bulk magnetization. In thin films containing different rare earths MCD-PE allows to monitor the magnetization in an element specific way. This is demonstrated using the ordered heteromagnetic interface Eu/Gd as an example.
- OSTI ID:
- 170294
- Report Number(s):
- CONF-950404--
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 6Pt1 Vol. 31; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic circular dichroism in 4{bold {ital d}}{r_arrow}4{bold {ital f}} resonant photoemission and photoabsorption of Gd metal
Magnetic dichroism in core-level photoemission from Gd(0001)