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A new approach to electrically detected magnetic resonance: spin dependent transient spectroscopy



Kenneth Myers, Patrick Lenahan, James Ashton, Jason Ryan


Electrically detected magnetic resonance (EDMR) is arguably the most sensitive method available to study electrically active point defects in semiconductor devices. Most EDMR studies have utilized spin dependent recombination current and thus require p-n junctions or a photoconductive structure. Some time ago, Chen and Lang proposed and demonstrated EDMR via spin dependent deep level transient spectroscopy in metal-oxide-semiconductor (MOS) capacitors. We report on a similar and significantly simpler technique: spin dependent transient spectroscopy (SDTS). We show that the sensitivity of this technique is independent of the resonance field and frequency. Through capacitance-voltage analysis, combined with our SDTS results, this technique can (crudely) provide information about the density of states of defects with a broad distribution of energy levels. In addition, we show that SDTS can be readily adapted to near-zero-field magnetoresistance effect measurements.
Journal of Applied Physics


Magnetic Resonance, Electron Spin Resonance, Electrically detected magnetic resonacne


Myers, K. , Lenahan, P. , Ashton, J. and Ryan, J. (2022), A new approach to electrically detected magnetic resonance: spin dependent transient spectroscopy, Journal of Applied Physics, [online],, (Accessed June 24, 2024)


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Created September 15, 2022, Updated November 29, 2022