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Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation

  • Drew, Alan J. Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland - Department of Physics, Queen Mary, University of London, UK
  • Hoppler, Julian Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland - Laboratory for Neutron Scattering, Paul Scherrer Institute, Villigen, Switzerland
  • Schulz, Leander Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Pratt, F. L. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, UK
  • Desai, P. Department of Physics, Queen Mary, University of London, UK
  • Shakya, P. Department of Physics, Queen Mary, University of London, UK
  • Kreouzis, T. Department of Physics, Queen Mary, University of London, UK
  • Gillin, W. P. Department of Physics, Queen Mary, University of London, UK
  • Suter, A. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland
  • Morley, N. A. Department of Engineering Materials, University of Sheffield, UK
  • Malik, Vivek Kumar Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Dubroka, Adam Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Kim, Kyung Wan Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Bouyanfif, Houssny Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Bourqui, Francis Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Bernhard, Christian Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Switzerland
  • Scheuermann, R. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland
  • Nieuwenhuys, G. J. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland
  • Prokscha, T. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland
  • Morenzoni, E. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, Villigen, Switzerland
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    23.11.2008
Published in:
  • Nature Materials. - 2009, vol. 8, p. 109 - 114
Molecular electronics
semiconductors
optical, photonic and optoelectronic materials
English Electronic devices that use the spin degree of freedom hold unique prospects for future technology. The performance of these 'spintronic' devices relies heavily on the efficient transfer of spin polarization across different layers and interfaces. This complex transfer process depends on individual material properties and also, most importantly, on the structural and electronic properties of the interfaces between the different materials and defects that are common to real devices. Knowledge of these factors is especially important for the relatively new field of organic spintronics, where there is a severe lack of suitable experimental techniques that can yield depth-resolved information about the spin polarization of charge carriers within buried layers of real devices. Here, we present a new depth-resolved technique for measuring the spin polarization of current-injected electrons in an organic spin valve and find the temperature dependence of the measured spin diffusion length is correlated with the device magnetoresistance.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
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Persistent URL
https://folia.unifr.ch/unifr/documents/301103
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