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Importance of spin-orbit interaction for the electron spin relaxation in organic semiconductors

  • Nuccio, Laura Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom - Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Chemin du Musée 3, CH-1700 Fribourg, Switzerland
  • Willis, M. Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom
  • Schulz, Leander Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Chemin du Musée 3, CH-1700 Fribourg, Switzerland
  • Fratini, S. Institut Néel-CNRS and Université Joseph Fourier, Boîte Postale 166, F-38042 Grenoble Cedex 9, France
  • Messina, F. University of Palermo, Department of Physics and Chemistry, Via Archirafi 36, 90123 Palermo, Italy
  • D’Amico, M. University of Palermo, Department of Physics and Chemistry, Via Archirafi 36, 90123 Palermo, Italy - Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia-MeSIAM, Via Archirafi 36, 90123 Palermo, Italy
  • Pratt, F. L. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
  • Lord, J. S. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
  • McKenzie, I. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
  • Loth, M. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA
  • Purushothaman, B. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA
  • Anthony, J. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA
  • Heeney, M. Department of Chemistry and Centre for Plastic Electronics, Imperial College London, SW7 2AZ London, United Kingdom
  • Wilson, R. M. Queen Mary University of London, School of Engineering and Materials Sciences, Mile End Road, London E1 4NS, United Kingdom
  • Hernández, I. Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom - MALTA Consolider Team, Departamento CITIMAC, Universidad de Cantabria, Avenida Los Castros s/n, 39005 Santander, Spain
  • Cannas, M. University of Palermo, Department of Physics and Chemistry, Via Archirafi 36, 90123 Palermo, Italy - Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia-MeSIAM, Via Archirafi 36, 90123 Palermo, Italy
  • Sedlak, K. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
  • Kreouzis, T. Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom
  • Gillin, W. P. Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom
  • Bernhard, Christian Department of Physics and Fribourg Center for Nanomaterials, University of Fribourg, Chemin du Musée 3, CH-1700 Fribourg, Switzerland
  • Drew, Alan J. Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom - ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
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    23.05.2013
Published in:
  • Physical Review Letters. - 2013, vol. 110, no. 21, p. 216602
English Despite the great interest organic spintronics has recently attracted, there is only a partial understanding of the fundamental physics behind electron spin relaxation in organic semiconductors. Mechanisms based on hyperfine interaction have been demonstrated, but the role of the spin-orbit interaction remains elusive. Here, we report muon spin spectroscopy and time-resolved photoluminescence measurements on two series of molecular semiconductors in which the strength of the spin-orbit interaction has been systematically modified with a targeted chemical substitution of different atoms at a particular molecular site. We find that the spin-orbit interaction is a significant source of electron spin relaxation in these materials.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302970
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