Hyperfine spectroscopy in a quantum-limited spectrometer
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Published:2020-12-17
Issue:2
Volume:1
Page:315-330
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ISSN:2699-0016
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Container-title:Magnetic Resonance
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language:en
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Short-container-title:Magn. Reson.
Author:
Probst Sebastian, Zhang Gengli, Rančić Miloš, Ranjan Vishal, Le Dantec Marianne, Zhang Zhonghan, Albanese Bartolo, Doll Andrin, Liu Ren Bao, Morton John, Chanelière Thierry, Goldner Philippe, Vion DenisORCID, Esteve Daniel, Bertet Patrice
Abstract
Abstract. We report measurements of electron-spin-echo envelope modulation (ESEEM) performed at millikelvin temperatures in a custom-built high-sensitivity spectrometer based on superconducting micro-resonators. The high quality factor and small mode volume (down to 0.2 pL) of the resonator allow us to probe a small number of spins, down to 5×102. We measure two-pulse ESEEM on two systems: erbium ions coupled to 183W nuclei in a natural-abundance CaWO4 crystal and bismuth donors coupled to residual 29Si nuclei in a silicon substrate that was isotopically enriched in the 28Si isotope. We also measure three- and five-pulse ESEEM for the bismuth donors in silicon. Quantitative agreement is obtained for both the hyperfine coupling strength of proximal nuclei and the nuclear-spin concentration.
Funder
Agence Nationale de la Recherche Seventh Framework Programme H2020 Excellent Science H2020 Marie Skłodowska-Curie Actions
Publisher
Copernicus GmbH
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