Articles | Volume 2, issue 2
https://doi.org/10.5194/mr-2-699-2021
https://doi.org/10.5194/mr-2-699-2021
Research article
 | 
07 Sep 2021
Research article |  | 07 Sep 2021

On the modeling of amplitude-sensitive electron spin resonance (ESR) detection using voltage-controlled oscillator (VCO)-based ESR-on-a-chip detectors

Anh Chu, Benedikt Schlecker, Michal Kern, Justin L. Goodsell, Alexander Angerhofer, Klaus Lips, and Jens Anders

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Cited articles

Abhyankar, N., Agrawal, A., Shrestha, P., Maier, R., McMichael, R. D., Campbell, J., and Szalai, V.: Scalable microresonators for room-temperature detection of electron spin resonance from dilute, sub-nanoliter volume solids, Sci. Adv., 6, eabb0620, https://doi.org/10.1126/sciadv.abb0620, 2020. a
Anders, J.: Fully-integrated CMOS Probes for Magnetic Resonance Applications, PhD thesis, EPFL, Lausanne, Switzerland, https://doi.org/10.5075/epfl-thesis-5154, 2011. a
Anders, J., Angerhofer, A., and Boero, G.: K-band single-chip electron spin resonance detector, J. Magn. Reson., 217, 19–26, 2012a. a, b, c
Anders, J., Ortmanns, M., and Boero, G.: Noise in Frequency-Sensitive ESR Detectors, in: Proceedings of the MATHMOD 2012, 14–17 February 2012, Vienna, Austria, 2012b. a, b, c
Anders, J., Ortmanns, M., and Boero, G.: Frequency noise in current-starved CMOS LC tank oscillators, Nonlinear Dynamics of Electronic Systems, Proceedings of NDES 2012, 11–13 July 2012, Wolfenbuettel, Germany, 1–4, 2012c. a
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Short summary
Novel electron spin resonance (ESR) detectors based on voltage-controlled oscillators (VCOs) have been attracting attention, mainly due to the possibility of integrating the whole ESR spectrometer onto a single printed circuit board at relatively low cost while maintaining a performance comparable to commercial solutions. We present an experimental setup where the signal is detected as a change in VCO oscillation amplitude, along with in-depth theoretical analysis of the novel readout scheme.