Inverse photoemission spectra for Ni(110) at an angle of incidence of 20° show the photon intensity resulting from 9.7 eV transitions of incident spin-polarized electrons to unfilled states just above the Fermi level. Reprinted with permission from J. Unguris, A. Seiler, R. J. Celotta, D. T. Pierce, P. D. Johnson, and N. V. Smith, Phys. Rev. Lett. 49, 1047 (1982). Copyright © 1982, The American Physical Society.
Spin polarization of secondary electrons from Ni(110) as a function of kinetic energy. The heavy solid line is the calculated spin polarization including scattering of minority-spin electrons into empty d states. Reprinted with permission from D. R. Penn, S. P. Apell, and S. M. Girvin, Phys. Rev. Lett. 55, 518 (1985). Copyright © 1985, The American Physical Society.
(a) SPEELS spectra for I + and I − measured for a wave vector transfer of 8.8 nm−1 on an 8 ML Co film. (b) Spin wave dispersion for 8 ML hcp Co on W(110) and 8 ML fcc Co on Cu(100) measured by SPEELS. The dashed lines are the dispersion relations for an acoustic surface spin wave mode calculated using a nearest-neighbor Heisenberg model. Reprinted with permission from M. Etzkorn, P. S. Anil Kumar, W. Tang, Y. Zhang, and J. Kirschner, Phys. Rev. B 72, 184420 (2005). Copyright © 2005, The American Physical Society.
Schematic diagram of the sample configuration consisting of the Fe(001) whisker, a wedge-shaped Au spacer layer, and a thin Fe top layer. The SEMPA images of the M x and M y components of the magnetization display the oscillatory coupling with two periods. Reprinted with permission from J. Unguris, R. J. Celotta, D. A. Tulchinsky, and D. T. Pierce, J. Magn. Magn. Mater. 198–199, 396 (1999). Copyright © 1999, Elsevier B.V.
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