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

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.
Authors:
; ;  [1] ; ;  [2] ;  [3]
  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)
Publication Date:
OSTI Identifier:
22415194
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DEPOSITION; ELECTRON DENSITY; ELECTRON SPECTROSCOPY; FERROMAGNETISM; GOLD; IRON; LAYERS; L-S COUPLING; SPECTRAL DENSITY; SPIN ORIENTATION