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The structure and magnetism of ultrathin Fe films epitaxially grown on a Cu(001) surface are investigated by grazing scattering of fast H and He atoms or ions. By making use of a new variant of ion beam triangulation based on the detection of the number of emitted electrons, we obtain direct information on the structure of the film surface. We observe for room temperature growth a dominant and defined fcc-like structure. Complex surface reconstructions as reported in recent STM and LEED studies are observed only for cooling and H 2 dosing.
T. Bernhard , M. Baron , M. Gruyters , and H. Winter * Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin-Adlershof, Germany * Author to whom correspondence should be addressed. Electronic address: winter@physik.hu-berlin.de Article Text (Subscription Required)
Figure 1 Normalized intensity of reflected He atoms (solid lines; left scales) and remanent spin polarization P S from electron capture (squares; right scales) with increasing deposition of Fe on Cu(001) at T GR =300 K (top) and T GR =190 K (bottom). Dotted lines are drawn to guide eyes. Vertical dashed lines separate different regimes described in text. Reuse & Permissions
Figure 2 Normalized SBD counts versus azimuthal angle of incidence Θ for grazing scattering of 29 keV protons from Cu(001) under Φ in =1.6 at T GR =300 K with increasing Fe coverage. Curves are shifted with respect to data for clean surface northstar consulting group at bottom. Vertical lines in lower part indicate low-index northstar consulting group directions [ u v ] in primitive square surface lattice. Reuse & Permissions
Figure 4 Same as Fig. 2 for 7 ML films grown at 300 K and measured at 190 K. Lower curve and LEED pattern: no H 2 dose; upper curve and LEED pattern: 50 L H 2 . Dotted curves: results from computer simulations. Reuse & Permissions ×
Journal: Phys. Rev. Lett. Rev. Mod. Phys. Phys. Rev. A Phys. Rev. B Phys. Rev. C Phys. Rev. D Phys. Rev. E Phys. Rev. X Phys. Rev. Applied Phys. Rev. ST Accel. Beams Phys. Rev. ST Phys. Educ. Res. Phys. Rev. Phys. Rev. (Series I) Physics
The structure and magnetism of ultrathin Fe films epitaxially grown on a Cu(001) surface are investigated by grazing scattering of fast H and He atoms or ions. By making use of a new variant of ion beam triangulation based on the detection of the number of emitted electrons, we obtain direct information on the structure of the film surface. We observe for room temperature growth a dominant and defined fcc-like structure. Complex surface reconstructions as reported in recent STM and LEED studies are observed only for cooling and H 2 dosing.
T. Bernhard , M. Baron , M. Gruyters , and H. Winter * Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin-Adlershof, Germany * Author to whom correspondence should be addressed. Electronic address: winter@physik.hu-berlin.de Article Text (Subscription Required)
Figure 1 Normalized intensity of reflected He atoms (solid lines; left scales) and remanent spin polarization P S from electron capture (squares; right scales) with increasing deposition of Fe on Cu(001) at T GR =300 K (top) and T GR =190 K (bottom). Dotted lines are drawn to guide eyes. Vertical dashed lines separate different regimes described in text. Reuse & Permissions
Figure 2 Normalized SBD counts versus azimuthal angle of incidence Θ for grazing scattering of 29 keV protons from Cu(001) under Φ in =1.6 at T GR =300 K with increasing Fe coverage. Curves are shifted with respect to data for clean surface northstar consulting group at bottom. Vertical lines in lower part indicate low-index northstar consulting group directions [ u v ] in primitive square surface lattice. Reuse & Permissions
Figure 4 Same as Fig. 2 for 7 ML films grown at 300 K and measured at 190 K. Lower curve and LEED pattern: no H 2 dose; upper curve and LEED pattern: 50 L H 2 . Dotted curves: results from computer simulations. Reuse & Permissions ×
Journal: Phys. Rev. Lett. Rev. Mod. Phys. Phys. Rev. A Phys. Rev. B Phys. Rev. C Phys. Rev. D Phys. Rev. E Phys. Rev. X Phys. Rev. Applied Phys. Rev. ST Accel. Beams Phys. Rev. ST Phys. Educ. Res. Phys. Rev. Phys. Rev. (Series I) Physics
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