Microwave-induced direct spin-flip transitions in mesoscopic Pd/Co heterojunctions

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New Journal of Physics. 2016, 18(9), 093045. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/18/9/093045
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We experimentally investigate the effect of resonant microwave absorption on the magneto-conductance of tunable Co/Pd point contacts. At the interface a non-equilibrium spin accumulation is created via microwave absorption and can be probed via point contact spectroscopy. We interpret the results as a signature of direct spin-flip excitations in Zeeman-split spin-subbands within the Pd normal metal part of the junction. The inverse effect, which is associated with the emission of a microwave photon in a ferromagnet/normal metal point contact, can also be detected via its unique signature in transport spectroscopy.

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ISO 690PIETSCH, Torsten, Stefan EGLE, Martin W. PRESTEL, Hans FRIDTJOF-PERNAU, Florian STRIGL, Elke SCHEER, 2016. Microwave-induced direct spin-flip transitions in mesoscopic Pd/Co heterojunctions. In: New Journal of Physics. 2016, 18(9), 093045. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/18/9/093045
BibTex
@article{Pietsch2016-09-22Micro-37520,
  year={2016},
  doi={10.1088/1367-2630/18/9/093045},
  title={Microwave-induced direct spin-flip transitions in mesoscopic Pd/Co heterojunctions},
  number={9},
  volume={18},
  journal={New Journal of Physics},
  author={Pietsch, Torsten and Egle, Stefan and Prestel, Martin W. and Fridtjof-Pernau, Hans and Strigl, Florian and Scheer, Elke},
  note={Article Number: 093045}
}
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