Controlling spin–orbit interaction in a ferromagnetic Fe/Au double layer

Journal Article · Mon Jan 26 04:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4906932· OSTI ID:22415194

Samarin, Sergey N.; Kostylev, Mikhail; Williams, James F. ^[1]; Artamonov, Oleg M.; Baraban, Alexander P. ^[2]; Guagliardo, Paul ^[3]

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1. School of Physics, The University of Western Australia, Perth, Western Australia 6009 (Australia)
2. Research Institute of Physics, St. Petersburg State University, St. Petersburg 199034 (Russian Federation)
3. Centre for Microscopy, Characterisation and Analysis, the University of Western Australia, Perth, Western Australia 6009 (Australia)

Using spin-polarized single- and two-electron spectroscopy, we probe exchange and spin–orbit interaction in a double layer of Fe and Au on W(110) and measure the spin asymmetry of the Bloch spectral density function of the sample. In a 5 ML iron film, the spin-orbit contribution to the measured asymmetry of the (e,2e) spectra was not detectable, whereas a deposition of about 1 ML of gold introduced a substantial spin-orbit component in the measured asymmetry. At the same time, this double layer still exhibits ferromagnetic properties: (i) the spectral density function asymmetry demonstrate imbalance of spin-up and spin-down electron densities in the valence band and (ii) the Stoner excitation asymmetry has almost the same value as in a pure Fe film.

• OSTI ID: 22415194
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 106; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DEPOSITION
ELECTRON DENSITY
ELECTRON SPECTROSCOPY
FERROMAGNETISM
GOLD
IRON
L-S COUPLING
LAYERS
SPECTRAL DENSITY
SPIN ORIENTATION