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Title: Rotatable spin-polarized electron source for inverse-photoemission experiments

Abstract

We present a ROtatable Spin-polarized Electron source (ROSE) for the use in spin- and angle-resolved inverse-photoemission (SR-IPE) experiments. A key feature of the ROSE is a variable direction of the transversal electron beam polarization. As a result, the inverse-photoemission experiment becomes sensitive to two orthogonal in-plane polarization directions, and, for nonnormal electron incidence, to the out-of-plane polarization component. We characterize the ROSE and test its performance on the basis of SR-IPE experiments. Measurements on magnetized Ni films on W(110) serve as a reference to demonstrate the variable spin sensitivity. Moreover, investigations of the unoccupied spin-dependent surface electronic structure of Tl/Si(111) highlight the capability to analyze complex phenomena like spin rotations in momentum space. Essentially, the ROSE opens the way to further studies on complex spin-dependent effects in the field of surface magnetism and spin-orbit interaction at surfaces.

Authors:
; ;  [1]
  1. Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, 48149 Münster (Germany)
Publication Date:
OSTI Identifier:
22251057
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 85; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM PRODUCTION; ELECTRON BEAM PUMPING; ELECTRON BEAMS; ELECTRON SOURCES; ELECTRONIC STRUCTURE; L-S COUPLING; MAGNETISM; PERFORMANCE; PHOTOEMISSION; POLARIZATION; SENSITIVITY; SPIN ORIENTATION

Citation Formats

Stolwijk, S. D., E-mail: Sebastian.Stolwijk@wwu.de, Wortelen, H., Schmidt, A. B., and Donath, M. Rotatable spin-polarized electron source for inverse-photoemission experiments. United States: N. p., 2014. Web. doi:10.1063/1.4863097.
Stolwijk, S. D., E-mail: Sebastian.Stolwijk@wwu.de, Wortelen, H., Schmidt, A. B., & Donath, M. Rotatable spin-polarized electron source for inverse-photoemission experiments. United States. https://doi.org/10.1063/1.4863097
Stolwijk, S. D., E-mail: Sebastian.Stolwijk@wwu.de, Wortelen, H., Schmidt, A. B., and Donath, M. 2014. "Rotatable spin-polarized electron source for inverse-photoemission experiments". United States. https://doi.org/10.1063/1.4863097.
@article{osti_22251057,
title = {Rotatable spin-polarized electron source for inverse-photoemission experiments},
author = {Stolwijk, S. D., E-mail: Sebastian.Stolwijk@wwu.de and Wortelen, H. and Schmidt, A. B. and Donath, M.},
abstractNote = {We present a ROtatable Spin-polarized Electron source (ROSE) for the use in spin- and angle-resolved inverse-photoemission (SR-IPE) experiments. A key feature of the ROSE is a variable direction of the transversal electron beam polarization. As a result, the inverse-photoemission experiment becomes sensitive to two orthogonal in-plane polarization directions, and, for nonnormal electron incidence, to the out-of-plane polarization component. We characterize the ROSE and test its performance on the basis of SR-IPE experiments. Measurements on magnetized Ni films on W(110) serve as a reference to demonstrate the variable spin sensitivity. Moreover, investigations of the unoccupied spin-dependent surface electronic structure of Tl/Si(111) highlight the capability to analyze complex phenomena like spin rotations in momentum space. Essentially, the ROSE opens the way to further studies on complex spin-dependent effects in the field of surface magnetism and spin-orbit interaction at surfaces.},
doi = {10.1063/1.4863097},
url = {https://www.osti.gov/biblio/22251057}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 1,
volume = 85,
place = {United States},
year = {Wed Jan 15 00:00:00 EST 2014},
month = {Wed Jan 15 00:00:00 EST 2014}
}