Mn l3,2 x-ray absorption spectroscopy and magnetic circulardichroism in ferromagnetic ga1-xmnxp
Conference
·
OSTI ID:928568
We have measured the X-ray absorption (XAS) and X-ray magnetic circular dichroism (XMCD) at the Mn L{sub 3,2} edges in ferromagnetic Ga{sub 1-x}Mn{sub x}P films for 0.018 {le} x {le} 0.042. Large XMCD asymmetries at the L{sub 3} edge indicate significant spin-polarization of the density of states at the Fermi energy. The spectral shapes of the XAS and XMCD are nearly identical with those for Ga{sub 1-x}Mn{sub x}As indicating that the hybridization of Mn d states and anion p states is similar in the two materials. Finally, compensation with sulfur donors not only lowers the ferromagnetic Curie temperature but also reduces the spin polarization of the hole states.
- Research Organization:
- COLLABORATION - Department of Materials Scienceand Engineering, University of California, Berkeley, CA94720
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 928568
- Report Number(s):
- LBNL-61184; TRN: US0803285
- Resource Relation:
- Conference: 28th International Conference on the Physics ofSemiconductors (ICPS-2006), Vienna, Austria, July 24-28,2006
- Country of Publication:
- United States
- Language:
- English
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