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).

*We acknowledge support from the DOE under Award #DE-SC0000909.

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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