Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • F Lofink
  • S Hankemeier
  • R Froemter
  • J Kirschner
  • HP Oepen
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000301566600032&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1063/1.3685629
eISSN
1089-7623
Externe Identifier
  • Clarivate Analytics Document Solution ID: 909LS
  • PubMed Identifier: 22380100
ISSN
0034-6748
Ausgabe der Veröffentlichung
2
Zeitschrift
REVIEW OF SCIENTIFIC INSTRUMENTS
Artikelnummer
ARTN 023708
Datum der Veröffentlichung
2012
Status
Published
Titel
Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging
Sub types
  • Article
Ausgabe der Zeitschrift
83

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>The time stability of a polarization analyzer that is used for imaging of magnetic structures in a scanning electron microscope with spin polarization analysis (spin-SEM or SEMPA) is investigated. The detector is based on the diffraction of low-energy electrons at a W(100) crystal at 104.5 eV (LEED detector). Due to the adsorption of hydrogen from residual gas, a change of the scattering conditions is found that causes an angular shift of the LEED beams as well as changes of intensity. The quality factor, which describes the efficiency of the detector in SEMPA application, however, is found to be almost constant up to a hydrogen coverage of θ ≈ 0.25. This gives stable working conditions within roughly 1 h at vacuum conditions of 10−10 mbar.</jats:p>
Autoren
  • F Lofink
  • S Hankemeier
  • R Frömter
  • J Kirschner
  • HP Oepen
DOI
10.1063/1.3685629
eISSN
1089-7623
ISSN
0034-6748
Ausgabe der Veröffentlichung
2
Zeitschrift
Review of Scientific Instruments
Sprache
en
Online publication date
2012
Datum der Veröffentlichung
2012
Status
Published
Herausgeber
AIP Publishing
Herausgeber URL
http://dx.doi.org/10.1063/1.3685629
Datum der Datenerfassung
2023
Titel
Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging
Ausgabe der Zeitschrift
83

Datenquelle: Crossref

Abstract
The time stability of a polarization analyzer that is used for imaging of magnetic structures in a scanning electron microscope with spin polarization analysis (spin-SEM or SEMPA) is investigated. The detector is based on the diffraction of low-energy electrons at a W(100) crystal at 104.5 eV (LEED detector). Due to the adsorption of hydrogen from residual gas, a change of the scattering conditions is found that causes an angular shift of the LEED beams as well as changes of intensity. The quality factor, which describes the efficiency of the detector in SEMPA application, however, is found to be almost constant up to a hydrogen coverage of θ ≈ 0.25. This gives stable working conditions within roughly 1 h at vacuum conditions of 10(-10) mbar.
Addresses
  • Institut für Angewandte Physik, Universität Hamburg, Jungiusstr. 11, 20355 Hamburg, Germany. flofink@physik.uni-hamburg.de
Autoren
  • F Lofink
  • S Hankemeier
  • R Frömter
  • J Kirschner
  • HP Oepen
DOI
10.1063/1.3685629
eISSN
1089-7623
Externe Identifier
  • PubMed Identifier: 22380100
Open access
false
ISSN
0034-6748
Ausgabe der Veröffentlichung
2
Zeitschrift
The Review of scientific instruments
Sprache
eng
Medium
Print
Paginierung
023708
Datum der Veröffentlichung
2012
Status
Published
Datum der Datenerfassung
2012
Titel
Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
83

Datenquelle: Europe PubMed Central

Abstract
The time stability of a polarization analyzer that is used for imaging of magnetic structures in a scanning electron microscope with spin polarization analysis (spin-SEM or SEMPA) is investigated. The detector is based on the diffraction of low-energy electrons at a W(100) crystal at 104.5 eV (LEED detector). Due to the adsorption of hydrogen from residual gas, a change of the scattering conditions is found that causes an angular shift of the LEED beams as well as changes of intensity. The quality factor, which describes the efficiency of the detector in SEMPA application, however, is found to be almost constant up to a hydrogen coverage of θ ≈ 0.25. This gives stable working conditions within roughly 1 h at vacuum conditions of 10(-10) mbar.
Autoren
  • F Lofink
  • S Hankemeier
  • R Frömter
  • J Kirschner
  • HP Oepen
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/22380100
DOI
10.1063/1.3685629
eISSN
1089-7623
Ausgabe der Veröffentlichung
2
Zeitschrift
Rev Sci Instrum
Sprache
eng
Country
United States
Paginierung
023708
Datum der Veröffentlichung
2012
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2012
Titel
Long-time stability of a low-energy electron diffraction spin polarization analyzer for magnetic imaging.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
83

Datenquelle: PubMed

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