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

Sergey Samarin; O.M. Artamonov; A.P. Baraban; Mikhail Kostylev; Paul Guagliardo; James Williams

doi:10.1063/1.4906932

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

Sergey Samarin, O.M. Artamonov, A.P. Baraban, Mikhail Kostylev, Paul Guagliardo, James Williams

Centre for Microscopy, Characterisation & Analysis

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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 language	English
Article number	042404
Pages (from-to)	1-5
Number of pages	5
Journal	Applied Physics Letters
Volume	106
DOIs	https://doi.org/10.1063/1.4906932
Publication status	Published - 29 Jan 2015

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10.1063/1.4906932

Samarin et.al., 2015 Controlling spin–orbit interaction in a ferromagnetic Fe/Au double layer
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abstract = "{\textcopyright} 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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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.

U2 - 10.1063/1.4906932

DO - 10.1063/1.4906932

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JO - Applied Physics Letters

JF - Applied Physics Letters

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