Identification of multi-photon transitions between magnetic dipole states using electrically detected magnetic resonant excitation with variable drive-field helicities.

ORAL

Abstract

For magnetic resonance conditions where the amplitude of the resonant driving field B1 is close to the static magnetic Zeeman field B0, quantum-optical effects linked to the two photon helicities, including the Bloch-Siegert shift [1,2] or multiple photon effects [3,4,5], emerge. In order to study the latter, we built a radio frequency domain electron spin resonance setup which allows for driving fields with arbitrary polarization. For the detection of magnetic resonance at B0 in the mT-range where spin polarization is all but vanishing, we used spin-dependent recombination currents in a fully deuterated form of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (d-MEH-PPV), in which proton-induced random hyperfine fields are minimized. We report results obtained for circularly, linearly, and elliptically polarized excitation states. [1] J. J. Sakurai, Modern Quantum Mechanics, Revised Edition. Addison-Wesley (1994); [2] J. Romhányi et al., Phys. Rev. B 92(5), 054422 (2015); [3] J. H. Shirley, Phys. Rev. 138 (4B), B979 (1965); [4] M. Göppert-Mayer, Annalen der Physik, 18(7-8), 466 (1931); [5] J. I. Kaplan and S. Meiboom, Phys. Rev. 106(3), 499 (1957); [6] D. P. Waters et al., Nature Phys. 11(11), 910 (2015).

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Presenters

  • Adnan Nahlawi

    Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA

Authors

  • Adnan Nahlawi

    Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA

  • Hans Malissa

    University of Utah, Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA., Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA

  • Dani Stoltzfus

    Centre for Organic Photonics and Electronics, School of Chemistry & Molecular Biosciences, The University of Queensland, Queensland 4072, Australia., Centre for Organic Photonics and Electronics, School of Chemistry & Molecular Biosciences, The University of Queensland, Queensland 4072, Australia

  • Paul Burn

    Centre for Organic Photonics and Electronics, School of Chemistry & Molecular Biosciences, The University of Queensland, Queensland 4072, Australia

  • Tamim Darwish

    The National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia., National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia

  • Anna Leung

    The National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia., National Deuteration Facility, ANSTO, Lucas Heights, New South Wales 2234, Australia

  • John Lupton

    Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Universitätsstrasse 31-93040 Regensburg, Germany., Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040 Regensburg, Germany

  • Christoph Boehme

    University of Utah, Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA., Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, Utah 84112, USA