Growth and characterization of insulating ferromagnetic semiconductor (Al,Fe)Sb
arXiv:1509.03430 · doi:10.1063/1.4937142
Abstract
We investigate the crystal structure, transport and magnetic properties of Fe-doped ferromagnetic semiconductor (Al1-x,Fex)Sb thin films up to x = 14% grown by molecular beam epitaxy. All the samples show p-type conduction at room temperature and insulating behavior at low temperature. The (Al1-x,Fex)Sb thin films with x lower or equal to 10% maintain the zinc blende crystal structure of the host material AlSb. The (Al1-x,Fex)Sb thin film with x = 10% shows intrinsic ferromagnetism with a Curie temperature (TC) of 40 K. In the (Al1-x,Fex)Sb thin film with x = 14%, a sudden drop of mobility and TC was observed, which may be due to microscopic phase separation. The observation of ferromagnetism in (Al,Fe)Sb paves the way to realize a spin-filtering tunnel barrier that is compatible with well-established III-V semiconductor devices.
Manuscript and Supplemental Material, all 18 pages
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Cited by in corpus (13)
- High-temperature intrinsic ferromagnetism in the (In,Fe)Sb semiconductor
- Growth and characterization of insulating ferromagnetic semiconductor (Al,Fe)Sb
- In-plane to perpendicular magnetic anisotropy switching in heavily-Fe-doped ferromagnetic semiconductor (Ga,Fe)Sb with high Curie temperature
- Electronic structure of the novel high- ferromagnetic semiconductor (Ga,Fe)Sb: x-ray magnetic circular dichroism and resonance photoemission spectroscopy studies
- Robustness of ferromagnetism in (In,Fe)Sb diluted magnetic semiconductor to variation of charge carrier concentration and Fermi level position
- High-temperature intrinsic ferromagnetism in heavily Fe-doped GaAs layers
- Densities of states in Fe-doped III-V semiconductors: a first-principles study
- Magnetization process of the insulating ferromagnetic semiconductor (Al,Fe)Sb
- Ferromagnetism and giant magnetoresistance in zinc-blende FeAs monolayers embedded in semiconductor structures
- Growth and characterization of quaternary-alloy ferromagnetic semiconductor (In,Ga,Fe)Sb
- Development of magnetism in Fe-doped magnetic semiconductors: Resonant photoemission and x-ray magnetic circular dichroism studies of (Ga,Fe)As
- Ferromagnetism induced by hybridization of Fe 3d orbitals with ligand InSb bands in n-type ferromagnetic semiconductor (In,Fe)Sb
- Current-in-plane spin-valve magnetoresistance in ferromagnetic semiconductor (Ga,Fe)Sb heterostructures with high Curie temperature