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  Location of Trapped Electron Centers in the Bulk of Epitaxial MgO(001) Films Grown on Mo(001) Using in situ W-band Electron Paramagnetic Resonance Spectroscopy

Cornu, D., Rocker, J., Gonchar, A., Risse, T., & Freund, H.-J. (2016). Location of Trapped Electron Centers in the Bulk of Epitaxial MgO(001) Films Grown on Mo(001) Using in situ W-band Electron Paramagnetic Resonance Spectroscopy. Physical Review Letters, 117(1): 016801. doi:10.1103/PhysRevLett.117.016801.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-001F-C Version Permalink: https://hdl.handle.net/21.11116/0000-0003-2EE9-4
Genre: Journal Article

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PhysRevLett.117.016801.pdf (Publisher version), 487KB
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2016
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 Creators:
Cornu, Damien1, Author           
Rocker, Jan1, Author           
Gonchar, Anastasia1, Author           
Risse, Thomas1, 2, 3, Author           
Freund, Hans-Joachim1, Author           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Institut für Chemie und Biochemie - Physikalische und Theoretische Chemie, Freie Universität Berlin, ou_persistent22              
3Berlin Joint EPR Laboratory, Freie Universität Berlin, 14195 Berlin, Germany, ou_persistent22              

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 Abstract: We present the first in situ W-band (94-GHz) electron paramagnetic resonance (EPR) study of a trapped electron center in thin MgO(001) films. The improved resolution of the high-field EPR experiments proves that the signal originate from a well-defined species present in the bulk of the films, whose projection of the principal g-tensor components onto the (001) plane are oriented along the [110] direction of the MgO lattice. Based on a comparison between the structural properties of the films, knowledge of the ability of bulk defects to trap electrons, and the properties of the EPR signal, it is possible to propose that the paramagnetic species are located at the origin of a screw dislocation in the bulk of the film.

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 Dates: 2016-01-182016-06-272016-07-01
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.117.016801
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: 5 Volume / Issue: 117 (1) Sequence Number: 016801 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1