Field-effect detected magnetic resonance of nitrogen-vacancy centers in diamond based on all-carbon Schottky contacts
Year: 2025
Type: article
Abstract: The nitrogen-vacancy (NV) center is a defect in diamond whose spin state can be read optically by exploiting its photoluminescence or electrically by exploiting its charge generation rate under illumination, both of which being spin-dependent. The latter method offers numerous opportunities in terms of integration and performance compared to conventional optical readout. Here, we investigate the physical properties of a graphitic-diamond-graphitic structure under illumination. We show how, for a type IIa diamond material, electron-hole pairs generated by an ensemble of NV centers lead to a p-type material upon illumination, making this all-carbon structure equivalent to two back-to-back Schottky diodes. We analyze how the reverse current flowing upon illumination changes as a function of bias voltage and radiofrequency-induced excitation of the NV ensemble spin resonances. Furthermore, we demonstrate how an additional field effect arising from the illumination scheme affects the reverse current, resulting in a photoelectrical signal that can exceed the optical signal under the same illumination conditions. Xuan Phuc Le and colleagues report on the photoelectric detection of spin resonances in nitrogen-vacancy centres in a graphitic-diamond-graphitic structure. Behaving like two back-to-back Schottky diodes, it produces an enhanced photoelectric signal.
Source: Communications Engineering
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,190
Awards: G1218517985, G2963621974, G3898308737, Compact and wide instantaneous bandwidth spectrum analyzer exploiting Nitrogen Vacancy centers, Advanced Circuits for Detection and Control of Diamond Quantum Sensors, Advancing the market uptake of diamond defects quantum sensors, G6948170503, G8935317164
OpenAlex ID: W4416910012