Spin and orbital moments of nanoscale Fe{sub 3}O{sub 4} epitaxial thin film on MgO/GaAs(100)
- Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD (United Kingdom)
- York-Nanjing Joint Centre of Spintronics, School of Electronics Science and Engineering, Nanjing University, Nanjing 210093 (China)
- National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093 (China)
- Department of Physics, University of York, York YO10 5DD (United Kingdom)
- Diamond Light Source, Didcot OX11 0DE (United Kingdom)
Nanoscale Fe{sub 3}O{sub 4} epitaxial thin film has been synthesized on MgO/GaAs(100) spintronic heterostructure, and studied with X-ray magnetic circular dichroism. We have observed a total magnetic moment (m{sub l+s}) of (3.32 ± 0.1)μ{sub B}/f.u., retaining 83% of the bulk value. Unquenched orbital moment (m{sub l}) of (0.47 ± 0.05)μ{sub B}/f.u. has been confirmed by carefully applying the sum rule. The results offer direct experimental evidence of the bulk-like total magnetic moment and a large orbital moment in the nanoscale fully epitaxial Fe{sub 3}O{sub 4}/MgO/GaAs(100) heterostructure, which is significant for spintronics applications.
- OSTI ID:
- 22261565
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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