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

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Abstract

© 2015 AIP Publishing LLC. 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 5ML iron film, the spin-orbit contribution to the measured asymmetry of the (e,2e) spectra was not detectable, whereas a deposition of about 1ML 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.
Original languageEnglish
Article number042404
Pages (from-to)1-5
Number of pages5
JournalApplied Physics Letters
Volume106
DOIs
Publication statusPublished - 29 Jan 2015

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spin-orbit interactions
asymmetry
orbits
electron spectroscopy
rocks
gold
valence
iron
probes
excitation

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title = "Controlling spin-orbit interaction in a ferromagnetic Fe/Au double layer",
abstract = "{\circledC} 2015 AIP Publishing LLC. 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 5ML iron film, the spin-orbit contribution to the measured asymmetry of the (e,2e) spectra was not detectable, whereas a deposition of about 1ML 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.",
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Controlling spin-orbit interaction in a ferromagnetic Fe/Au double layer. / Samarin, Sergey; Artamonov, O.M.; Baraban, A.P.; Kostylev, Mikhail; Guagliardo, Paul; Williams, James.

In: Applied Physics Letters, Vol. 106, 042404, 29.01.2015, p. 1-5.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Controlling spin-orbit interaction in a ferromagnetic Fe/Au double layer

AU - Samarin, Sergey

AU - Artamonov, O.M.

AU - Baraban, A.P.

AU - Kostylev, Mikhail

AU - Guagliardo, Paul

AU - Williams, James

PY - 2015/1/29

Y1 - 2015/1/29

N2 - © 2015 AIP Publishing LLC. 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 5ML iron film, the spin-orbit contribution to the measured asymmetry of the (e,2e) spectra was not detectable, whereas a deposition of about 1ML 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.

AB - © 2015 AIP Publishing LLC. 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 5ML iron film, the spin-orbit contribution to the measured asymmetry of the (e,2e) spectra was not detectable, whereas a deposition of about 1ML 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.

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