We show that in pulsed electrically detected magnetic resonance (pEDMR) signal modulation in combination with a lock-in detection scheme can reduce the low-frequency noise level by one order of magnitude and in addition removes the microwave-induced non-resonant background. This is exemplarily demonstrated for spin-echo measurements in phosphorus-doped silicon. The modulation of the signal is achieved by cycling the phase of the projection pulse used in pEDMR for the readout of the spin state.
Lock-in detection for pulsed electrically detected magnetic resonance
Felix Hoehne, Lukas Dreher, Jan Behrends, Matthias Fehr, Hans Huebl, Klaus Lips, Alexander Schnegg, Max Suckert, Martin Stutzmann, Martin S. Brandt; Lock-in detection for pulsed electrically detected magnetic resonance. Rev. Sci. Instrum. 1 April 2012; 83 (4): 043907. https://doi.org/10.1063/1.4704837
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