Single-chip detector for electron spin resonance spectroscopy

Tolga Yalcin, Giovanni Boero (EPFL)

Review of Scientific Instruments 79, 094105 (2008)


We have realized an innovative integrated detector for electron spin resonance spectroscopy. The microsystem, consisting of an LC oscillator, a mixer, and a frequency division module, is integrated onto a single silicon chip using a conventional complementary metal-oxide-semiconductor technology. The implemented detection method is based on the measurement of the variation of the frequency of the integrated LC oscillator as a function of the applied static magnetic field, caused by the presence of a resonating sample placed over the inductor of the LC-tank circuit. The achieved room temperature spin sensitivity is about 10^10 spins/sqrt(GHz) with a sensitive volume of about 100 um^3.

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