Gruenbaum, Tobias and Bange, Sebastian and Kronseder, Matthias and Back, Christian H. and Lupton, John M. (2019) Electrical detection of ferromagnetic resonances with an organic light-emitting diode. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 52 (48): 485108. ISSN 0022-3727, 1361-6463
Full text not available from this repository. (Request a copy)Abstract
Organic semiconductors show strong magnetic-field effects in transport and luminescence because of inherently spin-dependent recombination. We explore whether paramagnetic resonance features can be enhanced in a hybrid structure comprising a thin yttrium iron garnet (YIG) film, undergoing ferromagnetic resonance (FMR) and an organic light-emitting diode (OLED). We investigate the effect of radio-frequency (RF) driving of this hybrid structure in a magnetic field. Under these conditions, an indirect bolometric effect enables the detection of FMR driven in the YIG film in the DC resistance of the OLED. The increased RF power absorption of the YIG film under resonance gives rise to a heating of the magnetic film. Subsequent heat transfer to the OLED causes a change in transport characteristics of the device. Good agreement of this electrically detected signal is found with a direct measurement of the RF power absorption. Using temperature dependent measurements, the thermal nature of the resistance signal is confirmed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SUBSIDIARY ABSORPTION; TEMPERATURE; ferromagnetic resonance; yttrium iron garnet; organic light-emitting diodes |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group John Lupton |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Mar 2020 07:57 |
| Last Modified: | 24 Mar 2020 07:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25798 |
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